It is a hated and well-known fact among smartphone owners that it is extremely difficult to tether a computer to a phone in order to harness the GPRS internet. Many people do spend the multiple hours getting it to work, though, and once it does work it is hugely useful- you can have internet on your computer anywhere there is cell reception (practically everywhere), for a fee of about $20/month.
But a company called TapRoot is making it easier. On Wednesday they unveiled their new WalkingHotSpot software, which is supposed to use the built-in wifi receiver on the phone to make it into its own wifi hotspot. The company is looking to release its software to network providers, who will charge customers individually for the service.
First of all, good job TapRoot. You have found the secret nirvana of software companies, the killer app, the problem that everyone needs solving but nobody has enough initiative to solve. Taproot will be very successful. This is how you start a software company that will make millions