Tethering Apps for my phone?

Many cell phone companies are currently cracking down on users for tethering illegally. Many users are being sent notifications by their cell phone companies telling them to stop tethering or be forcibly switched to a tethering plan. That being said, there is no easy way for your cell phone provider to know if you are tethering or not because the unauthorized tethering apps like PDA Net don't notify the carrier you are tethering. I would say as long as you keep your usage low you will be okay.