You have the store -- now here's your wallet, too. Making buying anything, anywhere, easier is Google Wallet, which recently added pay via e-mail, and APIs which allow payments to be made from inside Android apps. For the time being, however, mark this one up as the proverbial work-in-progress. Despite the hype, Google Wallet has yet to resonate in a big way with consumers. Still, it's early in the history of e-commerce, and Google can afford to be patient.