Privacy is one of the main factors behind Facebook's rise. For one thing, the site asks for more personal
school and job-related information--it even asks you to confirm the former with a valid school email address, thus encouraging people to use their real identities. With MySpace, users have more
anonymity, which analysts say enables veiled sexual predators and solicitors to pervade the site.
The other major factor, analysts say, is Facebook's improved functionality. The site is more organized, and the addition of third-party software is a welcoming choice its users are free to make. Meanwhile, the fact that Facebook is "cleaner" and contains even more personal information than MySpace has advertisers licking their chops. A new targeting system is under development for launch later this year.