I'm continually amazed by how much overlap there is between various subcultures. Most of the kinky people I know are nerds... most of the nerds I know are gamers... many of the gamers I know are queer... many of the queer people I know are of a religious minority... many of the non-monotheist people I know are also non-monogamous... it just goes on.
It's a common enough occurrence that I've seen multiple self-referential jokes about "bi poly pagan kinky geek chicks" or some permutation thereof. So obviously it's not just me.
I mentioned this to Master once, and he hypothesized that it was because marginalized groups felt a kinship for each other, so naturally there'd be cross-pollination. This makes sense to me, as it seems like almost all "minority" groups - whether minorities in the sociological sense or just niche cultures - have a high occurrence of other minority groups. The exception to this, however, is POC, which most subcultures seem to have a dearth of.
(Naturally, this doesn't mean there aren't any queers of color, geeks of color, what have you; however, they're often absent (or under-represented) in public discourse/gatherings.)
Which is unfortunate, of course. And I hope we can fix that.