In-wall USB charging is here--well, almost--with the Truepower U-Socket, which is currently awaiting UL Approval and should be available within months. The $19.95 socket can be self-installed if you've got a little know-how; an installation video will be "available shortly" so you can decide if you're up to it or not.
One thing I don't understand is that the product description says
...The USB ports only draw power when something is physically connected to the port. We didn't want a vampire port that continually sucks and wastes power when not in use so this was one of the features on the top of our priority list during the design phase.
Isn't that true of regular plugs as well, that they only draw power if something is connected to it? I have a hard time believing that even my plugless outlets are leaking power. Please let me know in the comments if I'm misinformed.