Care for a virtual Guinness?

Compete.com has released year-over-year growth rates for the top 20 social networks.

MySpace led the pack despite -1 percent growth from February, followed by Facebook (77 percent) and Classmates.com (11 percent).

Social network Fubar saw the biggest growth, following relative obscurity last year. Nearly 1.7 million monthly visitors in February 2008 marked a 3.3 million percent change from last year.

Fubar bills itself as "the first online bar." Users can buy one another virtual drinks with "fuBucks," which they earn by using the site.