Almost all my IRL friends I met online first. @manda and I met online over five years ago, and we have been happily dating (and living together, I might add) for two years now.
I also hang with @Arithmetica (she lives a few blocks from me) when I can 8D; I have this habit to just stay indoors even though I live smack-dab in the middle of old Nihon Machi (or the International District, as the city now likes to call it because the Chinese bitched a fit.)