Some interesting news for you!
It seems Google is coming up with Google Wallet – something like eBay’s PayPal program. Google has DNS entries for purchase.google.com and purchases.google.com. purchases.google.com is now going to the login screen, though login not working as of now.
Webmasterbrain.com has an article revealing this feature. See the screen shot of the application. It seems Google has disabled this by redirecting the purchase.google.com subdomain to Google.com homepage. So something is coming up, hopefully an eazy payment method for all. Get ready for paying for your online shopping via Google Wallet!