social networking sites growth

Nielsen//NetRatings reports that April’s top 10 social networking sites collectively grew 47% since last year — a climb from 46.8 million uniques in April 2005 to 68.8 million in April 2006. Nielsen//NetRatings says these social networking sites reach 45% of active Web suers. MySpace led the other social networks with 38.4 million unique visitors and growth rate of 367%.