See other profiles at the bottom of someone's profile frequently includes the person him/herself. In general though - it's an excellent idea, but it appears to be difficult to browse people and/or to search for someone specific.

(edit) Also I am not clear if everyone's treated equally on the site or if there are people how are willing to answer questions and the rest - who asks. I'd say that latter would be a more natural arrangement, and it'd be also sensible not to require an account to ask a question.