It was the original boogeyman of reddit, SRS stood for shit reddit says and all it did was basically link to racist/sexist/lgbt-phobic posts on other subreddits and people would make fun of the redditor in the comments. This mocking would break their psyche and was an unforgivable sin to all the fragile redditors and they would regularly come into SRS to argue and get mocked even harder. It had a similar vibe to r/chapotraphouse long before that existed but with less of an explicit leftist slant because was just that horrible, even libs could dunk on how shitty they were. It's hilarious that even though its basically a ghost town now this guy is still clutching his pearls about it all these years later.