Facebook logged 58.6% of all U.S. visits among 155 social networking Websites in Sep. ’09, 194% increase Sep. ’08.
  • Twitter growth, up 1,170% from Sep. ’08.
  • Facebook netted 58.6% of all U.S. social networking visits in Sep. ’09
  • In Sep. ’08, MySpace was the leading social network with a 66.8% share, logged 30.3% of U.S. social network visits in September, plummeting 55% from last year