Even that example doesn't fly. The website ratemyface.com (terrible name...) launched first, and amihot.com launched second.
edit: archive.org confirms it. You've got to be kidding me if you think those sites are remotely similar except for one tiny feature.
http://web.archive.org/web/20010202080600/http://amihot.com/
And you've got to admit that the basic idea alone totally carried the hotornot site.