I was reading a post on here that a couple of Verizon reps wrote in on. They stated that the only thing Verizon can track right now with tethering is by "assuming" you are tethering if you go over 6GB a month. At that point the only thing they can really do is throttle your bandwidth. (Which by the way, you can see my post on how to remove the throttle if they do)
http://www.droidforums.net/forum/showthread.php?t=185035
They also said PDA net tether was NOT a breach of your contract being you do not have to modify your phone to use it. I believe PDA net won that battle within the last couple of weeks as it suddenly showed back up on the market. So...point being they have no way to tell if your using wireless tether or a "legal" tethering app to use 6GB a month. At this point...no worries.
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