Right now if you search certain keywords through
live.com, you can get 20~25% cashback from Microsoft!!
To get cashback, you need to sign up for a cashback account
https://cashbackaccount.search.live.com/cashback/welcome.aspxAlso make sure you disable any ad blocking software (adblock etc). I would just use Internet Explorer for it.
For Circuit City, search for
Circuit City, then you should see a banner on the right hand side saying Circuit City Online with Live Cash back at the buttom. Click on the banner and shop at Circuitcity.com and enjoy the cashback. The cashback for Circuit City is
20%
For Target, search for ipod, again the banner should appear on the left.
20% cashback also. Note that overstock.com also offers 10% cashback.

For ebay, you need to have an ebay account as well as a paypal account. The cashback is only applicable to Buy It Now listings and using paypal for payment. You can see the terms and conditions
here. Basically you can search a lot of things, like
ipod or
playstation 3, and a banner should appear on top. Click on the banner and enjoy
25% cashback! There are also several 10% off coupons from paypal that you can try, but this is YMMV.
Coupons:
cholidaynov2008
CPPEBAY110810P
CRTSY08JLY25
CHOLIDAYTECH