Originally Posted by Caveat Emperor
For the iPhone users:
Go grab iTether ($14.99) off the App Store before Apple pulls it. It enables internet tethering (using your phone's 3G internet signal) on your iPhone via USB without the added plan charges AT&T requires or the need to dump your unlimited internet plan (if you've been grandfathered in on prior capless plans).
Be careful with that. ATT has been busting people. Speculation is that they are catching people by checking browser strings.