Here's an updated table, with 4 period sliding windows:
UTC Payment Gh/s estimate
9/23/2013 8:07 0.1 553.6089029
9/23/2013 9:07 0.1 553.6473506
9/23/2013 10:07 0.1 553.5704605
9/23/2013 11:07 0.1 596.3636364
9/23/2013 12:07 0.1 553.6473506
9/23/2013 12:47 0.12248177 638.6066053
9/23/2013 13:07 0.1 779.487881
9/23/2013 14:07 0.1 779.5600491
9/23/2013 15:07 0.15 871.9003811
9/23/2013 15:47 0.15263979 927.5528756
9/23/2013 16:17 0.29072199 1214.078822
9/23/2013 17:07 0.15 1372.026411
So you're saying...
...they increased their hashrate as promised?
Actually my calculations would show a ~722 GH/s averaging yesterday and today. Averaging just today, it's ~748 GH/s. So not very promising.
Well, your calculations suck then