Link: http://itunes.apple.com/us/app/quasidisk/id493799257
This will allow you to tether a device (laptop, iPad, etc.) to your iPhone
and use the internet. Normally the carriers charge you a monthly fee to do
this but this workaround is live in the App Store now. Act fast, Apple
normally takes these down FAST.
The App does require some setup but a Youtube video with instructions can be
found by clicking the link below.
Link: http://9to5mac.com/2012/01/30/1-99-app-sneaks-into-the-app-stor