Free internet with a bluetooth phone and computer

By using a free dial-up service, get internet on your computer through your cell phone and only pay for air-time.
You need:

* Computer with Bluetooth and dial-up capability
* Cell phone with bluetooth
* Dial up number (A quick google search can get you a free one)

The dial-up access number I use can be found on http://www.sdfreenet.com/ Just sign up to get your number for free.