What's the best* online community—I include things like work Slacks, project-specific communities, and communities formed on platforms or in the cracks between platforms—that you've ever been a part of? Don't overthink it, what's the thing that comes instantly to mind?

* Most fun, least terrible, most generative, whatever.

Disclosure: I'll never quote you without asking, but I *am* in research mode for a thing that will be public someday.

@kissane the game sissyfight and its community message boards in the early 2000s