Choosing an Online Payment Service - Google Checkout vs. PayPal"": Google Checkout vs. PayPalis a digital short cut that covers Google's new Google Checkout online payment system. It covers all aspects of using Google Checkout, for both buyers and sellers, and then compares and contrasts Google Checkout with PayPal, the current market-leader in online payments. You will learn which of the two payment systems, Google Checkout or PayPal, should be used, when given a choice. Sellers will learn which payment system is best to use for their online auctions and merchant websites.