Google today announced the launch of their own rival to PayPal, Google Checkout.
"Google Checkout offers an easy and trusted checkout option that enables shoppers to purchase from participating stores with a single Google login. It also works with Google's search advertising program, AdWords, to help merchants acquire new customers and process all or a portion of their Checkout sales for free."
I will have a look into this to see how well this works, I'm particularly interested in seeing how the AdWords intergration performs. Starbucks Store, Levi's, Timberland and Buy.com are e-commerce websites already using Google Checkout.