middlecoin hasn't actually been on top for the past 5 days; middlecoin actually is the lowest-per-mh for 1day, 3day, 7day, and 14day averages.

poolpicker also indicates for 1day and 3day averages hashcows is currently better, and clevermining has the highest 7day, 14day, and 21day averages.

while the scatterplot line chart shows peaks for middlecoin, the daily averages tell a different story because it corrects for the large 'unexchanged' dumps middlecoin likes to do every few days.

while we don't know which pool is going to do better on any given day, if someone doesn't want to micromanage pool selection the broad trend is middlecoin doesn't pay out like it used to.