It wasn't long ago that Google Wallet delved into the online payment sphere, but as of today, the Mountain View juggernaut has extended its checkout service to mobile websites. According to Google, 97 percent of mobile shoppers abandon their carts, which is primarily due to the litany of information that needs to be manually entered. Now, when you stumble upon a mobile website that supports Google Wallet checkouts, you'll merely need to click the buy button, enter