>>12344325Not really "left"yfags either. Many people there seem to be regular progressives/liberals who just so happen to like socialist slogans and aesthetics. /lit/ is kind of like that too (or at least used to be before it became the "Books for this feel" board).
Now, when it comes to homework help or information on extremely specific topics (like math, history, or even explanations of memes), I'd say better than 4chan, about as useful as Quora, but not quite on the same level as StackExchange.