Originally Posted by vsevolod4

Ditto here.

At least with e-miles you know how many miles you get, even though you have to wait until you accumulate 500 miles, and then after the end of a quarter.

Far more transparent than "e-rewards" which I maintain is not worth one's time (works out to 40 frequent flyer miles per hour spent doing surveys), has many restrictions on earning (caps), your points devalue, sometimes as quickly as 32 days after earning them, and have many other problems. I've cancelled e-rewards and am sticking with e-miles. Only problem with e-miles is not that many opportunities to earn.