As smart phones get smarter and smarter, and have access to faster Internet speeds, sometimes the desire to use your phone's Internet connection for your personal computer is a thought. I'll give you a good example of when you might want to use your phone's Internet connection: you are traveling and you want to use your PC to go online but there is no WiFi and you only have your cellphone and your carrier's signal.
Even if your carrier has you locked into a capped data plan, the folks at Mobile Stream, the maker of EasyTether, believe that you should always have access to your phone's internet connection, and their app EasyTether does just that. EasyTether is a USB based tethering tool. It carries numerous advantages over WiFi and bluetooth competitors, with one reason being that some carriers who disallow tethering block the ability for your phone to broadcast a WiFi signal instead of recieving it. Some laptops don't have bluetooth connectivity, for example the older laptops. USB tethering, from my standpoint, is the most solid (due to the hardware connection) tether option available and it is also the hardest to block.