eBay Users Check In, But They Don't (Google) Checkout In June 2007 thousands of eBay loyalists descended on Boston for eBay's annual sellers convention. And in hopes of promoting its new Google Checkout payment system--which would be competing directly with eBay's Paypal subsidiary--Google organized a party to be held during the eBay show, inviting eBay sellers to attend. In addition, the Google party was supposed to be a protest against eBay for barring merchants from using Google Checkout. When eBay got wind of Google's plan, it promptly cancelled all of its U.S. ads running on the search engine for more than a week. At the time, eBay was the single largest buyer of search ads on Google. Google cancelled its Boston tea party.