Steve sent me an email during last weekend talking about his earnings from some banks in the past 6 months. He said he was not aware of so many opportunities of sign-up bonuses. He just jumped some popular deals and really enjoy his earning:

BOA MyAccess Checking plus “Keep the Change” program: $100+$180 (accumulated via playing paypal and paying small bills)

Chase Free Checking: $125 (using ING to make direct deposit);

ING: $25+$10 ($25 is sign-up bonus and $10 for 1 referral.);

American Express Starwood Preferred Guest Card: 10,000 bonus points ($100 Amazon gift card);

Chase Freedom Card: $50;

Citi Business Card with ThankYou Network: 15,000 ThankYou Points ($150 Shell gift card)

Citi CashReturns Card: ~$200 cash back in 3 months;

Total amount is $740+$200

Thanks Steve!