I participate in the SO community a lot (I'm top answer-er for the Canvas tag and HTML5 tag). It's not quite a "community", though, because while I have a lot of respect for the other answer-ers I don't really get to interact with them very much, aside from complimenting a novel solution and the like. I sort of wish there were more methods for interaction (the chat channels don't help that much for niche tags).
And while my interaction with askers is always fleeting, I'd really like to thank them for all their support. At the end of the day their words are the only encouragement I need: