Not for nothing, but in fact I do take issue with phrases such as the Twitter community or the contention that one exists, because I think it devalues the word. (We all know my various pet peeves about not devaluing words by diluting them into nonspecificity.) Twitter isn’t a community, its a userbase. There are communities—plural—on Twitter, to varying degrees, but there’s neither a Twitter community, a Facebook community, nor a Tumblr community.