Bitcoin Mining Distribution
Block: 156990
11 Dec 2011 

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

         Total Chain 100.00%           1,782

             Unknown  77.08%           1,373
           BTC Guild  13.89%             247
             Eligius   4.17%              74
         Yourbtc.net   4.17%              74
              NMCbit   0.69%              12