Www.facebook.com -

Initially limited to Ivy League and other U.S. colleges, the site rebranded to "Facebook" in 2005 and opened to the general public (anyone over age 13 with a valid email) by September 2006.

Launched by Mark Zuckerberg and co-founders at Harvard University as "thefacebook.com" to help students share photos and network. WWW.FACEBOOK.COM

Facebook serves as a "social utility" that allows users to create free profiles and connect with friends, family, and colleagues. Key features include: Help Center - Facebook Initially limited to Ivy League and other U