• Twitter – 422% growth in 12 months (2.3m monthly visitors)
  • Facebook – 100% growth in 12 months (38m monthly visitors)
  • LinkedIn – 146% growth in 12 mnths (10.8m monthly visitors)
  • MySpace – Flat growth (61.3m unique visitors)
  • http://mashable.com/2008/09/16/twitter-traffic-growth/