So, before I got my iPhone, I signed up for a Moto V3x. I'd like to use it to tether to my PowerBook. I'm reading online all these warnings that I might get charged (I'm well aware that it's AT&T's right to do this). My question is: has anyone here been charged? Do you know anyone who got charged? A "no" is as good as a "yes". And, if you don't mind, any resources for how to tether the Moto V3x to my PB? Thanks.