Today at Google I/O at the Moscone Center, Google introduced a ton of new features and products. One thing that was in the sandbox was being able to send money to your friends via Gmail, thanks to Google Wallet.
Basically, you'll be able to send money like an attachment in your Gmail account. It'll be rolling out over the next few months. To add money, just hover over the paperclip icon in your compose screen, and tap or click on the $ icon and send the amount you wish to send.
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