Why do I sometimes have a negative mining profitable?
(Fee higher as Reward)
2014-04-24 23:54:55 0.00001496 BTC 0.00287978 MINING Block #297513, Reward: 0.00004337, Fee: 0.00002841
2014-04-24 22:51:29 -0.00002027 BTC 0.00286482 MINING Block #297507, Reward: 0.00004370, Fee: 0.00006397
2014-04-24 20:25:29 0.00002265 BTC 0.00288509 MINING Block #297494, Reward: 0.00004539, Fee: 0.00002274
2014-04-24 19:33:46 -0.00000975 BTC 0.00286244 MINING Block #297492, Reward: 0.00004514, Fee: 0.00005489
2014-04-24 17:29:34 0.00002054 BTC 0.00287219 MINING Block #297490, Reward: 0.00004349, Fee: 0.00002295
2014-04-24 16:36:44 0.00001693 BTC 0.00285165 MINING Block #297488, Reward: 0.00004352, Fee: 0.00002659
2014-04-24 15:36:40 0.00004391 BTC 0.00283472 MINING Block #297484, Reward: 0.00004446, Fee: 0.00000055
2014-04-24 15:36:19 0.00003632 BTC 0.00279081 MINING Block #297483, Reward: 0.00004365, Fee: 0.00000733
2014-04-24 15:19:51 0.00003843 BTC 0.00275449 MINING Block #297480, Reward: 0.00004364, Fee: 0.00000521
2014-04-24 15:08:40 0.00003570 BTC 0.00271606 MINING Block #297478, Reward: 0.00004445, Fee: 0.00000875
2014-04-24 14:49:50 -0.00001258 BTC 0.00268036 MINING Block #297474, Reward: 0.00004424, Fee: 0.00005682
2014-04-24 12:40:51 0.00003463 BTC 0.00269294 MINING Block #297459, Reward: 0.00004338, Fee: 0.00000875
2014-04-24 12:21:28 0.00003906 BTC 0.00265831 MINING Block #297454, Reward: 0.00004398, Fee: 0.00000492
2014-04-24 12:09:37 0.00003945 BTC 0.00261925 MINING Block #297452, Reward: 0.00004383, Fee: 0.00000438
2014-04-24 11:59:46 0.00002999 BTC 0.00257980 MINING Block #297451, Reward: 0.00004420, Fee: 0.00001421
2014-04-24 11:25:21 0.00003644 BTC 0.00254981 MINING Block #297449, Reward: 0.00004440, Fee: 0.00000796
2014-04-24 11:09:35 -0.00000874 BTC 0.00251337 MINING Block #297447, Reward: 0.00004509, Fee: 0.00005383