Facebook is closing in on MySpace in gaining American audience. Facebook is now nearly two thirds the size of MySpace in terms of the number of uniques visiting the sites every month.

Number of unique visitors per month on Facebook in US according to:
Nielson Online : 39.9 million
Compete : 44.6 million
Quantcast : 45.2 million

Number of unique visitors per month on MySpace in US according to:
Nielson Online : 58.4 million
Compete : 54.9 million
Quantcast : 66.8 million

Keep yourself updated on all the technology news by following us on Twitter or by joining us on our Facebook Page.