/r/SlateStarCodex is a sub for discussing the internet rationalist blog of the same name. This sub essentially started as /r/ShitSlateStarCodexSays.

From a post on /r/SlateStarCodex:

It's a place where a lot of former rationalists hang out. I for one still agree with the ideals of 'rationalism' but think y'all have formed an anti-"SJW*" echo chamber here and it's fun to point out the hypocrisy folks exhibit here, how you regularly fail to live up to your own ideals, in a way where I won't have to engage with you anymore because that got exhausting.