http://money.cnn.com/2013/12/04/tech...html?hpt=hp_t2


318,000 Facebook (FB, Fortune 500) accounts
70,000 Gmail, Google+ and YouTube accounts
60,000 Yahoo (YHOO, Fortune 500) accounts
22,000 Twitter (TWTR) accounts
9,000 Odnoklassniki accounts (a Russian social network)
8,000 ADP (ADP, Fortune 500) accounts (ADP says it counted 2,400)
8,000 LinkedIn (LNKD)accounts