MySpace, Facebook Still On Top

If MySpace were to lose its top spot among social networks, it'd have a long way to fall. Though US visits to the powerhouse were down five percent since last year, MySpace still commanded nearly 74% of the social networking market, according to Hitwise. 

Facebook, long in second place but up 32%, pulled in nearly 15% of US social networkers, a share that towers over its nearest competitor's.

That nearest competitor is one may not have heard of, but in the past year it has seen meteoric growth to grab a market share greater than Bebo, the traditional third place network recently acquired by AOL.