When the Google Checkout referral came out, it offered $10 to new signups. However, I quickly noticed that the banner would sometimes change to showing text other than the Google Checkout offer to other banners completely. Inspite of this, I'd figure I'd give it a try. Yesterday, that all changed when I noticed that Google had removed the $10 incentive and replaced it with a much less compelling "Sign up for faster shipping with Google Checkout," so the ads are now gone from my sites, sorry. Back to just the Firefox referral.