My dictionary defines a community as "a group of people brought together by shared interests or geographical proximity."
The Guide defines a community as "a bunch of unwashed hippies sitting about eating lentils in an almost unbeliveably dirty place. Or is that a commune? Either way, if anyone asks you to join one, don't. Hitchhikers don't join things."
The Doctor defines a community as "one of those weird human things they keep banging on about. It's important, I think. But I wasn't really listening."
I define this community as the crazed ramblings of many deranged minds, the sort of minds who think "Hmm, the Hitchhiker's Guide to the Galaxy, I like that" and "Doctor Who, I like that" and manage to somehow extract from that the conclusion that they should write crossover fic.
If you join, well, what can I say? You were warned.