Me personally? Reddit. For the languages and technologies I worked with, their subreddits were far friendlier to reasonable questions, even FAQs, even if they weren't pristinely composed. There was also a recency bias that I appreciated. If you brought up a subject that was asked last year, people would link back to the earlier conversation while continuing the current chat given new developments. An example might be:

> Q: What HTTP library should I use?

> A: Last year everyone liked Requests [link to chat], and that's still good, but if you're using async you might look at aiohttp which is newer and not quite as polished yet but has much better async support.

Those were the answers that would've kept SO relevant: here's what we all thought last time this came up, but here's how the situation has evolved since then.

Reddit came with its own problems, of course. The programming subreddits hadn't (yet?) been as weighed down with those issues when I weaned myself off going there.