Originally Posted by Motorcycle Mama
They most likely won't terminate you contract, but they can charge you for the data. Something like $.02 per kilobyte, I think.
I personally don't think that the argument that you accessed through the VZStart Page will work because you 1) agreed to the Verizon TOS when you signed up for service and 2) you have to agree to terms of Tetherberry which basically indicate that you are responsible.
But good luck.
LOL ... If you go over the 5 gig cap, they will shut your internet off and send you a text to contact Verizon. Once you reply to customer service they will turn you back on, normally you get one warning if your nice about it.