Google announced that it would shut down Google Checkout in favor of Google Wallet back in 2011. This week, the company announced that in six months Google checkout will be officially dead to merchants.
With that, the company has shared an "office hours" video dealing with the change, so if you had any questions about it, give it a watch, and see if they get answered:
Developers for Google Play the Chrome Web Store and Offers Marketplace will continue to be supported, and will automatically transition to the Google Wallet Merchant Center in the coming weeks. Shoppers will simply be able to use Google Wallet to make purchases on merchant apps and sites, as well as on Google properties.