These sites listed below are not as private as you think!  Posts you may of made can be found when you google your screen name, or email address!  I do not believe I read anything about them doing that when I signed up!  Feel free to add any you may of found as well. As I find any more I too will add them to this list! 

Mylife.com

myspace.com

mygeneology.com

datehookup.com