IRL forename: Biblically common.
IRL surname: Very rare. I didn't know of anyone with it outside my immediate family until I was about 10, and no-one can spell it properly. Only with the rise of the internet have I since found the odd pocket of them here and there, and fully three other people with the exact same "full" name (but different middle names, at least) on the whole planet. One's a semi-pro cyclist, another is a middle-aged banker, and the third appears to be a small time serial killer. So all in all, I don't think I'm doing too badly in terms of vices.
Handle: Rare as hell, which is why I've hung onto it for a decade and a half. The one time I've ever had a site refuse it was youtube, of all places. Tried to make an account (for work reasons... I have no funny videos worth showing the world) about 6 months ago only to find some egyptian guy registered using it about 3 years ago, favourited one video, then presumably realised he'd spelt his own name wrong (tahrir maybe?) and ragequit FOR EVAR. Grr.