http://www2.coinmine.pl/prt/index.php   - Scam, stole my coins,

I found in transaction history -
5582843    xxx   2014-01-11 02:19:55    TXFee    Confirmed    PpdeJwXzjZ6K2dnSjFLdjd2iGAub8WHQ2v       n/a    0.01000000
5582842    xxx   2014-01-11 02:19:55    Debit_MP    Confirmed    PpdeJwXzjZ6K2dnSjFLdjd2iGAub8WHQ2v    5e1e2293...bcad3aca    n/a    4,084.09183153

- So both addresses are their address. They put payment address and use Manual Payment to get all mined stuff