This offer has expired.
Google Checkout is Google’s PayPal killer and if you are a Citi card member you can get $5 or 1000 Thank You points if you register your card  by August 1st, 2006 and make a purchase with your card using Google Checkout by September 15th, 2006. If you have a student loan, those 1000 Thank You points are worth $10 so go with that over the $5 cash. (pesky Terms & Conditions , but you should read them)
Need a Citi card? My favorite now is Citi’s CashReturns card because of it’s 1% cash back everywhere with a 20% bonus after your first year, no limit, no annual fee.