Yeah I couldn't work out a way of distinguishing between a non-existent user, and a user who has never done anything.
Steve
Like this:
http://en.wikipedia.org/w/index.php?title=Special:Log&user=Anybody
-- geni
Actually, that won't do anything because if the account was created from another account it won't show up in the new account log for that user. You need to go to their user page. If there's a "User contributions" link the user exists, otherwise the user does not. --Mets501