5. MySpace

The OG of the social networks is the second biggest of the bunch despite all the popular newcomers. Launched in 2003, MySpace changed the way people connected with each other and pretty much dealt a death blow to musician demo tapes. It also taught digital entrepreneurs a valuable lesson: Cash out before its too late.

YOU AUGHTA KNOW:
Facebook officially overtook MySpace in April 2008 as the largest social networking site.