you know even if your carrier DOES allow you to tether, these posts should not be banned automatically. for example, i live in a country other than US, and there is nothing stated in my carrier with regards to extra charges caused by tethering. however, there may be instances where censorship of the net requires you to look for ways to circumvent them. there may be steps in tethering "breaching-TOS-style" that may help you get full access to the net.
not only do these kinds of threads help those who explicitly want to enjoy internet connection through tethering without having those legal liabilities but also those who can benefit from them one way or another..