Please. Captcha by default. Email domain filters. Auto-block federation from servers that don't respect. By default. Urgent.
And yes, to refute some comments, this publication is being upvoted by bots. A single computer was needed, not "thousands of dollars" spent.
I admin a decent sized facebook group, at 10.8k members currently.
Luckily, the facebook group is specifically for people living in a certain geographical area. As such, I am able to make questions, only somebody living in the area would know.
You would be surprised, there are LOTS of spammers who answer all of the questions. (Just- getting the wrong answer on the area-specific questions)
Duct-cleaning spam has been a real problem. lmao.
Honestly- I am surprised to find as much spam/scam/etc.... on a facebook group whose purpose is..... well, related to a small area in a midwestern town...
Also- I constantly regret taking on moderation and administration of this group. Moderating facebook sucks. :-/