Facebook killer? hardly.... but it is free to sign up. Just provide first name, last name, gender, birth date, country, zip code, and a valid email. The site was originally created by two high school students. It is a social networking site and was launched in the spring of 2005 by David, Catherine, Dusty, and Geoff Cook.
Links:
[1] http://www.myyearbook.com/?mysession=aW5mb19zaWdudXAmeWVzPTEmYXJlYT0=