Google Checkout

Google Checkout is an online payment processing service provided by Google aimed at simplifying the process of paying for online purchases. Users store their credit or debit card and shipping information in their Google Account, so that they can purchase at participating stores at the click of a button. Google Checkout also offers fraud protection, as well a unified page for tracking purchases and their status.
Google Checkout is focused on enabling one-time payments to be made from a purchaser to a merchant. Unlike PayPal, Google Checkout does not permit the use of stored funds, nor allows payments from person to person.