just an observation, unimining and antmine pools are consitantly mining blocks with awards of 1560+ while nlpool's block awards are 1544.
my guess is uni & ant are charging upfront .5% fees from the miners after block is found, while NL appears to be charging 0% fee but actually taking 1% from every block?
Good observation.. Also, Ant is finding blocks 3 times more then nlpool but hey nl has only around 1600 active miners as compared to 7000 in antpool.