searchme vs. 123people vs. redzee vs. viewzi
Source: Google Trends
searchme.com vs. 123people.com vs. redzee.com vs. viewzi.com
And the winner is: RedZee? Ok, from all the sites above it is the longest online, so it could establish a user base. Nonetheless the user experience could be much better (windows like pop ups prior every search?) and the results are mediocre.
And yes, before you wonder: Facesaerch.com is not in there, yet.