AdSense Now Doing Google Checkout Referrals

Google AdSense has added a new referral product: Google Checkout. The way this one works is that if someone follows your referral ad/link and signs up for Checkout, and buys at least ten dollars within the next 90 days, you get a dollar.
Here are some of the ad formats (funny, no little buttons):
Text link:
Sign up for Google Checkout
Banners:

Boxes:

Leaderboards:

Original post by Nathan Weinberg