http://poolpicker.eu/text.phpMiddlecoin 0.00573754
CleverMining 0.010628
WafflePool 0.00940643
HashCows 0.015
everybody here could be paid 3 times more than middlecoin by using other pools,
anyone can explain why waste mining power to the least profitable pool?
Except the top pool in your list, HashCows, has been the worst pool on average the for the last month. It's good to see them doing better but they wouldn't have been a very good choice most days -- even worse than MC.
Every pool in that list has been on top one day in the last five days. You never know which one it will be. That's your answer.