I think the question is a little ambiguous: If, by real identity, you mean using a real email address in the profile as opposed to a specially created one, yes

I think the question is a little ambiguous: If, by real identity, you mean using a real email address in the profile as opposed to a specially created one, yes I am. If you're asking whether I use my name as my handle, then no, and I think few people actually do that.