My other fave reward point sites:
ebates
has a big fat check program when your %of clickthrough buys add up.
http://www.erewards.com
you get points in the form of dollar values for surveys, and can redeem for things like blockbuster rentals, discounts at FTD, mileage points, etc.
http://www.points.com lets you exchange points from different programs and frequent flier things, etc.