Bitcoin Mining Distribution
Block: 157666
16 Dec 2011 

Hashrate (in Difficulty units per second; 1 Difficulty unit == 4 GiHash):

         Total Chain 100.00%           1,497

             Unknown  71.43%           1,069
           BTC Guild  18.75%             280
             Eligius   6.25%              93
         Yourbtc.net   3.57%              53