cashback credit cards

http://moneycentral.msn.com/content/banking/creditcardsmarts/p86145.asp
http://moneycentral.msn.com/banking/services/CreditCard.asp?iSearchId=9&Go=Go
http://www.mitbbs.com/article1/Money/5891165_0_1.html
http://www.mitbbs.com/article/Money/20918558_3.html
http://www.creditcards.com/credit-card-finder/index.php

Summary
Amex SimpleCashBiz: 5% on gas, office supplies and wireless
Chase FreedomSM: 3% on top 3 category everyday apply here