In my mind, a friend is someone who I'd trust with my wallet if I was drunk.
On that basis, yeah, there are a few people on here (as in 3, maybe 4) who I'd consider "friends", two of whom I've actually trusted enough to add them on Facebook, which (being as that's my RL page, not "Wordsmith's" page) is a hell of an honour, I usually automatically ignore anyone I've not spoken to for more than an hour before.
Although, wierdly, I find it strange to think of those people as their real names, rather than their gamertags.