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Why YSK: If you violate the rules, you and/or your posts may be removed.

First I would like to state that I have avoided changing the rules as I felt my role as the replacement mod was to step in and keep the community going as is. I didn't start this community, it's not mine, it's ours. After giving it some time I feel these two changes are important for moderation and my personal sanity.

The new rules are as follows:

Rule 12- Linking directly to a video as a source is not acceptable.

The reason I have added 12 is because overwhelmingly posts linking directly to videos violate one or more rules. They are always low effort and bring down the quality of posts in the community. This saves you having to watch the video to report it, and saves me having to watch the video to remove it.

Rule 13- If you file a report, include what specific rule is being violated and how.

I have made this a rule because of an annoying minority that spam their apps "violates community rules" button and then argue with me when i ask them to explain the rules violation in their reports. This text was already included at the bottom of the sidebar, but I have promoted it to an official rule for those annoying few.

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submitted 2 months ago* (last edited 2 months ago) by Novocirab@feddit.org to c/youshouldknow@lemmy.world

web.archive.org (no paywall)

via

Every summer I repost this article on how to spot drowning. Please read it and pass on. In the last few years I’ve had SIX messages from people who saved a kid’s life after clicking on the link from my feed.

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submitted 4 days ago* (last edited 4 days ago) by Zaelaa@lemmy.zip to c/youshouldknow@lemmy.world

In France, there is a powerful left-wing politician named Jean-Luc Mélenchon.

He was senator for decades. He was previously a minister. He has run for President multiple times. People close him describe him as a political beast.

https://en.wikipedia.org/wiki/Jean-Luc_M%C3%A9lenchon

On october 3th 2023, the newspaper Le Monde published an absolutely astonishing investigation into his girlfriend. They reveal that his girlfriend SCREAMS and HUMILIATES ordinary people. And he knows that.

https://www.lemonde.fr/societe/article/2023/10/03/pourquoi-la-justice-enquete-sur-la-deputee-lfi-sophia-chikirou_6192142_3224.html

3 days later, on october 6th 2023, Melenchon took a trip to Morocco.

Believing he was far away for any camera, he made a cynical confession to moroccan university students:

"I really don't care what newspapers reveal. The vast majority of voters don't read newspapers. They watch online videos"

"We are now in the great era of social media"

https://www.lefigaro.fr/politique/lfi-melenchon-prefere-sa-communication-video-qui-se-compte-en-millions-aux-articles-lus-par-des-milliers-de-personnes-20231005

Elon Musk regularly attacks the New York Times.

On social media, he urges people to not read it.

That's because the New York Times has published incredible stories about him.

Elon Musk knowingly lied about the safety of self-driving vehicles. Multiple people were killed

https://www.nytimes.com/2023/01/17/magazine/tesla-autopilot-self-driving-elon-musk.html?unlocked_article_code=1.0FA.6BPE.ictTmt9kuYUM

Musk is sexually harassing SpaceX engineers

https://www.nytimes.com/2022/11/17/business/spacex-workers-elon-musk.html?unlocked_article_code=1.0FA.xbgX.h15uViBA8cME

The Musk Foundation is breaking the law:

https://www.nytimes.com/2025/12/02/us/politics/elon-musk-foundation.html?unlocked_article_code=1.0FA.WyJ4.vfnRZI725oNm

When powerful politicians and businessmen tell you "don't read newspapers", they aren't trying to give you good life advice.

It's a manipulation attempt.

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submitted 4 days ago* (last edited 4 days ago) by VitoRobles@lemmy.today to c/youshouldknow@lemmy.world

Are you on the list? If so, congrats!

More info: https://lemmy.blahaj.zone/post/45728788

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cross-posted from: https://lemmy.world/post/49778353

Also /c/modabuse. Also /c/yepowertrippinbastards. Also lemmy.ml/c/worldnews, comrade, ACAB, and 552 individual accounts across 67 instances, about half of them on lemmy.world.

None of this is in the source code. It's downloaded at runtime from a file nobody has ever looked at.

If you're just tuning in

Tesseract is a third-party web frontend for Lemmy, maintained by asimons04 and licensed AGPL-3.0. Admins deploy it on their own servers alongside or instead of lemmy-ui, and there are public instances of it people use to browse Lemmy generally. If you've used a Lemmy site that didn't look like stock Lemmy, there's a fair chance it was this.

Last week db0 posted a PSA: Tesseract contains a blacklist of instance domains compiled directly into the application. 32 of them. Admins can't see it, can't configure it, and aren't told it's there. Connect to a listed instance and the app tells you it's "incompatible," which is not true.

I went through the code to see how that was implemented. The hardcoded list turns out to be the small half of the system.

There's a second filter policy fetched over HTTP every time the app loads. It isn't in the git repository. It's unauthenticated and world-readable, so anyone can pull it. Right now it carries 552 user accounts, 2,275 username patterns, 54 instances, 97 communities, 289 keyword patterns and 351 domains, with every category set to hide matches rather than flag them. Not collapsed behind a click. Simply absent, with no indication anything was removed.

Verify all of it in ten seconds

curl -s https://tesseract.dubvee.org/tesseract/api/system/policy \
  | base64 -d | gunzip > policy.json

That's the live policy, base64-wrapped gzip, 111KB of JSON when it unpacks. There's a stale fallback copy at /data/policy.dat as well.

It filters criticism of moderators

  • lemmy.sdf.org/c/modabuse — listed
  • lemmy.dbzer0.com/c/yepowertrippinbastards — listed
  • lemmy.dbzer0.com/c/YPTBcirclejerk — listed
  • community regex power ?tripping?
  • keyword censoring me

Call the rest of it whatever you like. This part is not spam defence.

It filters words

The 32 community name patterns include Communis(t|m), Conservativ(e|es|ism), Leftis(t|m), Libertarian(ism)?, ^Green Part(y|ies), Zionis(t|m), (Police|Cops), guillotine and billionaire.

Keywords include comrade, ACAB, neoliberal, proletaria(n|t) and death to.

Filtered communities on instances that aren't blocked: lemmy.ml/c/worldnews, lemmy.today/c/news, lemmy.ca/c/politicalnewscanada, lemmy.ca/c/usa, infosec.pub/c/strategic_unions.

The 552 users aren't bots

67 instances. 272 on lemmy.world alone, 40 on sh.itjust.works, 19 on lemmy.ca, and 28 instances contributing exactly one person each.

355 of the 552 usernames are plain alphabetic, twelve characters or under, median length eight. Only 36 look like spam registrations. A bot list looks like the opposite of that.

Seven of them aren't even Lemmy. There are Mastodon and Friendica accounts in there: people who have never used Lemmy, hidden by a Lemmy frontend, with no possible way of finding out.

I have the list and I'm not posting it. Most of these are ordinary people who got pattern-matched, and 552 names on this comm is a harassment target inside an hour. Run the command above and grep for yourself.

And it lies about it

When the instance block fires you get: "Incompatible Instance. Not Supported. $instance is not compatible with Tesseract."

Nothing is incompatible. It's a policy decision dressed as an API error, and it's what had db0 chasing a version mismatch that never existed.

For the hidden users, communities and keywords, you get no message at all.

Admins can't switch it off

Tesseract has env vars for PUBLIC_DOMAIN_BLACKLIST, PUBLIC_FAKE_NEWS_BLACKLIST and the shortener lists. There is none for either blocklist. enableToxicMode bypasses the other filters and explicitly not this one.

Self-host it and you cannot disable this, nothing in your config admits it exists, and the contents can change without you pulling a commit.

Before someone says it

A lot of that domain list is real spam defence. It filters conservatism as well as communism. "It targets the left" doesn't survive the data and I'm not going to pretend it does.

The problem is that spam filtering and political editorial got welded into one undocumented, remotely-updatable blob, shipped hidden, to admins who've never read it and users who don't know it's there. The spam work is what makes the rest unauditable: "it's a spam list" answers every individual question and none of the whole.

And /c/modabuse is not spam.

Asks

  1. Publish the runtime policy in the repo, or kill the endpoint.
  2. Stop reporting a policy block as a technical incompatibility.
  3. Tell users when something's been hidden. One line.
  4. Give operators an off switch, like every other blacklist in the codebase has.

It's AGPL-3.0 and db0 already forked it. That's the licence working as designed. But forking isn't disclosure, and the admins who need this are precisely the ones with no reason to go looking.

If you run Tesseract, you are relaying a 111KB moderation policy you have never read, under your instance's name, to users who don't know it exists.

Full contents of every list, unedited, in the comments.

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Why YSK: consuming too much sodium can lead to high blood pressure, increasing the risk of heart disease and stroke. In my country (USA), the average daily sodium intake is over 3,300mg, exceeding the recommended maximum of 2,300mg. The World Health Organization (WHO) recommends an even lower maximum of 2,000mg.

Also: with the rising cost of food, being mindful of additives that increase sell weight is important.

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https://ia803206.us.archive.org/26/items/the-dictionary-of-obscure-sorrows/The%20Dictionary%20of%20Obscure%20Sorrows.pdf

Never have I felt so understood. I am so glad/sad I know of this now.

Excerpt:

adomania

n. the sense that the future is arriving ahead of schedule, that all those years with fantastical names like '2013' are bursting from their hypothetical cages into the arena of the present, furiously bucking the grip of your expectations while you lean and slip in your saddle, one hand reaching for reins, the other waving up high like a schoolkid who finally knows the answer to the question

8
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When you share a YouTube video using the share button it adds “si=some_unique_code” to the URL. If you don’t remove that it shows your personal account to anyone who receives it so that they can chat directly with you. For a lot of people this is their real name.

I’ve seen it all over Lemmy so I figured I’d mention it here! You only need the stuff before the question mark in the URL to let others see the video.

This can also be turned off in your YouTube settings under the privacy section. The setting is “channel visibility for shared links”. It will still add the si code for tracking though.

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  • They have been found to have been altering the contents of the archived articles.
  • They have DDoSed a server using our browsers when we visit their site
  • Wikipedia has blacklisted it
  • It's DNS is banned widely

Guidance published ... asked editors to help remove and replace links to the following domain names used by the archive site: archive.today, archive.is, archive.ph, archive.fo, archive.li, archive.md, and archive.vn. The guidance says editors can remove Archive.today links when the original source is still online and has identical content;

Recommended alternatives include: Internet Archive Ghostarchive Megalodon

The Wikipedia guidance points out that the Internet Archive and its website, Archive.org, are “uninvolved with and entirely separate from archive.today.” The Internet Archive is a nonprofit based in the US.

ArsTechnica Source

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submitted 3 weeks ago* (last edited 3 weeks ago) by beep@piefed.world to c/youshouldknow@lemmy.world

Cromite browser was a privacy and security oriented Android browser.

Their latest update was in 21th of May: v148.0.7778.168.

Their commit history also suggest that the browser is slowly being sunset.

To put it into context, the current version of chrome on Android is 150.0.7871.63, released on 30th of June.

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submitted 3 weeks ago* (last edited 3 weeks ago) by kabe@lemmy.world to c/youshouldknow@lemmy.world

Content Warning: a lot of this stuff is obviously NSFL

Don't go through this footage if you're not fully prepared to see things you may never be able to unsee.

It includes:

  • 64,537 videos
  • 17,905 photos
  • Ability to download individual videos
  • Searchable index
  • Exhaustive sources list (300+ journalists)
  • Geolocation data
  • Livemap with minute to minute updates
  • Victim list

In a news media environment that doesn't want us to know/remember that a genocide is even happening in the first place, archives like this will preserve the record for future generations and ensure that the victims of this slaughter are not erased from history.

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submitted 3 weeks ago* (last edited 3 weeks ago) by supersquirrel@sopuli.xyz to c/youshouldknow@lemmy.world

Why do I think You Should Know?

One only need look to the injustices done to the Muslim community of New York City by the NYPD and others for an example of what the consequences of not understanding a diversity of people for what they are.... Any New Yorker worth their salt understands the importance of Muslims to New York City, to act like because some people from a different country who just happened to have the same religion... only vaguely? committed an act of terror would mean that Muslim New Yorkers liked it anymore than any other New Yorkers did? Yet history repeated itself and Mosques were treated as compounds to be monitored like the US did to US Japanese descendant populations in WW2....

What I mean by that point is that I think right now it is important to understand the nuance to groups that people want us to simplify down to a soundbite that serves as a justification.

The Website I linked is a University Of Michigan curated list of resources to learn about Islam (and I mean that in a very basic sense of learn about the history of it) that is mostly focused on the resources the University provides but is nonetheless a really compact extensive list you can quickly use as a starting point if you want to research something.

This is also a nice simple website I found that visualizes populations of Muslims on earth in a nice easy to understand way.

https://worldpopulationreview.com/country-rankings/muslim-population-by-country

Personally growing up in the US I know until pretty late into my life that I simply had no idea there were so many Muslims on Earth. Living through the post 9/11 years I would often hear statements said about Muslims or people who follow Islam from people who didn't really know any Muslims and the day I learned that there were that many Muslims it hit me as really unintuitive.

~2 Billion people is an incredible amount of human beings, there is no way even if you had infinite lifetimes to try that you could meaningfully reduce that many people down to anything other than the same spirit any human being is born with.

I don't mean this post in aggressive way, I just think genuinely more people should know in Christian predominant nations that when somebody starts generalizing about Islam or Muslims the correct response is to call attention to that fundamental logic error. Sure, criticize Islam, analyze it, talk about the politics of it, but be specific and be curious about the actual nuance to the story!

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Any time someone says "Muslims always" or "Islam is inherently... ____" return to this basic fact. Not only is that bigotry, the basic reality is that there are so many Muslims on Earth living in so many different places with different cultures that any kind of generalization is at a face level absurd like saying the world is flat.

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YSK about consumerrights.wiki (consumerrights.wiki)

"Creating the internet's largest dedicated repository of information on anti-consumer practices, one edit at a time."

I think it's important to have one central, accessible place documenting every scandal, controversy, screw-up a company has ever pulled. It allows you to make better choices and to better cut through the PR bullshit of said companies.

However, consumer rights wiki doesn't come up when I search for "[company X] controversies" or similar terms in search engines (based on my limited testing).

That's why I feel it's important for more people to know about this site.

Good introduction video : INTRODUCING THE CONSUMER PROTECTION DATABASE: EXPOSE EXPLOITATION & HOLD COMPANIES ACCOUNTABLE! - YouTube

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submitted 4 weeks ago* (last edited 4 weeks ago) by iocase@lemmy.zip to c/youshouldknow@lemmy.world

Absorption coolers use heat to regenerate their refrigerant. Two common types are a water vapour-LiBr chiller, and an ammonia-water chiller (in fact Einstein patented a mini bar chiller design still used today that has no moving parts, using just helium or hydrogen and gas absorption/evaporation to move refrigerating gasses around)

Single effect chillers have a low Coefficient of Performance (CoP) roughly around 0.4-0.6, meaning for every watt of heat you apply to a single effect chillers, you move 0.4-0.6W of heat, but they only need a minimum of 90⁰C in heat to power them.

Double effect chillers can reach 0.9-1.2 CoP.

Flue gasses are typically hotter than 90⁰C, so you'll often see absorbers part of combined heat and power systems. Cooling in the summer, heating in the winter. All using waste heat from power generation.

What I find the most fascinating about them is they work using heat. The only power you need to apply is for a few pumps to move fluids around at low pressures, otherwise the primary refrigeration energy comes from heat regenerating the refrigerant.

I've often wondered what a district cooling system using these would get for efficiency if you colocated it with something energy hungry like a cement kiln or glass kiln.

Video of how a double effect chillers works

District cooling video

Edit: these are used already for district cooling, just usually for a campus like a university or government complex. The big benefit is you can run them on marginal heat sources, even off of low grade geothermal.

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submitted 1 month ago* (last edited 1 month ago) by netvor@lemmy.world to c/youshouldknow@lemmy.world

You should know this ahead to fully enjoy that beauty of compact, mathematically sound week chart, and perhaps the accompanying momentary illusion that world makes sense again.

The next opportunity to enjoy most compact possible calendar page will be in 2038, so don't miss it!

(Bonus: if you notice that 1st week is week 5 so apparently January 2027 also has 4 weeks--what gives? That's because in ISO week numbering, first three days of January 2027 count as week 53 of 2026. In other words, week 1 of 2027 starts on January 4th.)

If your calendar starts with Sunday, this past February of 2026 was actually compact, and the next one is in 2037.

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submitted 1 month ago* (last edited 1 month ago) by TheTechnician27@lemmy.world to c/youshouldknow@lemmy.world

Some background context (assuming you're already roughly familiar with OpenStreetMap):

  • StreetComplete is an Android-exclusive app that acts as an extremely trimmed-down, gamified way to contribute to OpenStreetMap. You don't contribute new structures, but rather you fill in details about existing ones.
  • It'll ask you questions about existing structures like "How many levels does this building have?" or "What is the surface of this bike path?" These are called "quests", and it's expected (see: Bro Code, Division 6, Chapter 5, §32) that you're either there in person surveying or have been there recently and absolutely know that you're correct. The visual presentation is extremely smooth and beginner-friendly.
  • This is helpful not just to new users but to people who don't ever want to get deep into editing the map. (It can also help regular contributors notice small details they accidentally missed in an area.) A bunch of non-power-users contributing small details goes a long way to making the map actually robust and arguably better than services like GMaps – instead of just something that a few privacy/FOSS advocates vocally use and giant corporations silently use.
  • Go Map!! is a robust editor for iOS, kind of like an analog of Vespucci on Android.

However, I learned that Go Map!! isn't just a robust editor; you can also use it to contribute to StreetComplete's index of quests.

Why YSK: if you or a friend has an iOS device, this is a great way to contribute to OpenStreetMap with a very streamlined UI that acts more like a game than it does mapping software. I didn't know this before and would often only bring up StreetComplete and hope the other person has Android.

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submitted 1 month ago* (last edited 1 month ago) by Lurian@lemmy.world to c/youshouldknow@lemmy.world
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The report finds that data centers consumed about 4.4% of total U.S. electricity in 2023 and are expected to consume approximately 6.7 to 12% of total U.S. electricity by 2028. The report indicates that total data center electricity usage climbed from 58 TWh in 2014 to 176 TWh in 2023 and estimates an increase between 325 to 580 TWh by 2028.


I see a lot of people arguing about datacenters and their resource consumption. So i think it is good to have actual numbers on how much resources are being consumed. This post only includes energy consumption because i'm too lazy to look up water consumption.

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Some accounts are deleting their posts after a few downvotes. It's devastating on communities like c/asklemmy.

Lemmy doesn't track an account's karma like reddit. So, all downvotes will be isolated to your post or comment and won't affect your account—unless you wrote something truly horrible.

Remember lemmy is a community effort. Deleting a post also removes all comments on it. So you are not only robbing the effort others put in, you are actively removing knowledge from the fediverse. Others won't be able to find it through search and lemmy will seem lonelier than it already is.

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submitted 1 month ago* (last edited 1 month ago) by Wudi@feddit.uk to c/youshouldknow@lemmy.world

This summer, residents of Redmond, Bellevue, and Issaquah can apply to receive up to $2,000 off the purchase of a new e-bike.

https://www.redmond.gov/2537/E-Bike-Rebate-Program

https://bellevuewa.gov/city-government/departments/community-development/environmental-stewardship/transportation-electric-vehicles/pedal-forward-eastside

People from all 3 cities can apply from June 15 to June 29.

Recipients will be randomly selected.

To be notified when the application period opens, fill out this form

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submitted 1 month ago* (last edited 1 month ago) by cheese_greater@lemmy.world to c/youshouldknow@lemmy.world

Im using it currently to recreate watching Adult Swim by shuffling all the shows opened with VLC.

But it can be done to simulate other syndicated tv channels just without commercials

Or breathe new life into an old series you've seen a million times in sequence

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Awesome website. This is why the internet is amazing.

700 GB to torrent all.

https://charm.li/

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submitted 2 months ago* (last edited 2 months ago) by beep@piefed.world to c/youshouldknow@lemmy.world
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submitted 2 months ago* (last edited 2 months ago) by beep@piefed.world to c/youshouldknow@lemmy.world

cross-posted from: https://piefed.world/c/tech/p/1146502/telegram-apk-from-apkpure-is-a-spyware

On analyzing the APK with jadx, it contains a class DataCollector, which does not exist in the .apk file downloaded from the official Telegram website.

This class collects a lot of your data, including:

  • Your photos, videos, and files
  • Your contacts
  • Your messages
  • Your GPS Coordinates
  • Your SIM card information
  • Your Telegram profile

This data is monitored and uploaded continuously. All the data is uploaded to a server with IP Address 38.190.225.166

💬 Initial discovery by Eric Parker

🔗 APK Analysis: Part 1 | Part 2.

Source on Telegram.

view more: next ›

You Should Know

46847 readers
35 users here now

YSK - for all the things that can make your life easier!

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must begin with YSK.

All posts must begin with YSK. If you're a Mastodon user, then include YSK after @youshouldknow. This is a community to share tips and tricks that will help you improve your life.



Rule 2- Your post body text must include the reason WHY YSK:

In your post's text body, you must include the reason "Why" YSK: It’s helpful for readability, and informs readers about the importance of the content.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Posts and comments which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding non-YSK posts.

Provided it is about the community itself, you may post non-YSK posts using the [META] tag on your post title.



Rule 7- You can't harass or disturb other members.

If you harass or discriminate against any individual member, you will be removed.

If you are a member, sympathizer or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people and you were provably vocal about your hate, then you will be banned on sight.

For further explanation, clarification and feedback about this rule, you may follow this link.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- The majority of bots aren't allowed to participate here.

Unless included in our Whitelist for Bots, your bot will not be allowed to participate in this community. To have your bot whitelisted, please contact the moderators for a short review.



Rule 11- Posts must actually be true:

Disinformation, trolling, and being misleading will not be tolerated. Repeated or egregious attempts will earn you a ban. This also applies to filing reports: If you continually file false reports YOU WILL BE BANNED! We can see who reports what, and shenanigans will not be tolerated. We are not here to ban people who said something you don't like.



Rule 12- Linking directly to a video as a source is not acceptable.

Video only posts are responsible for an outsized portion of rules violations. Your post must contain text and meet the requirements of the previous rules.



Rule 13- If you file a report, include what specific rule is being violated and how.



Partnered Communities:

You can view our partnered communities list by following this link. To partner with our community and be included, you are free to message the moderators or comment on a pinned post.

Community Moderation

For inquiry on becoming a moderator of this community, you may comment on the pinned post of the time, or simply shoot a message to the current moderators.

Credits

Our icon(masterpiece) was made by @clen15!

founded 3 years ago
MODERATORS