Ebates is a pretty good cash back portal. I probably use it and TopCashBack the most when shopping online. Today they are offering 12% cash back on many stores. This looks to be a pretty large increase on cash back at many of these stores!
Ebates 12% Cash Back Deal
If you have some online shopping to do, you should check this one out! If you have some Amex Offers for You that you are planning on using; you might also want to check and see if you can double dip with this 12% cash back!