From a quick view (action=who):
guests (and search engine bots) are currently allowed to view the profile of members. Is this intended? Regarding members privacy I think it would be better to disable the "view profile" permissions for guests.. Personally I don't care much, I even use my real name most of the time :o , but it might concern others and will probably make it less interesting for bots to register..
I enabled it at some point for some testing..., but you're right, it's better off. Fixed.
This is also the default in SMF, by the way, on a fresh install.
test