Unless the 3G service is free, as with the Kindle (even if said free service is provided by AT&T...ick!), the answer is "no way". Of course, being an Android tablet, and not just an E-reader, we already know the 3G service wouldn't be free. Anyway, unless one has unlimited data (ie. Sprint), you already have one, and possibly two, thing(s) going against you. First is the additional cost of adding an additional device to your account. Second, unless you're on Verizon's or AT&T's "share everything" plans, you have to pay (a high price) for a data-only plan. Even if you do have unlimited data, you'll still have the additional cost of an additional device. Being on a "share everything" plan, I can tether my N7 to my phone without any additional costs involved. Besides, the majority of the time, my N7 is connected via WiFi, be it my home network, secured networks at certain other places I go, or certain public (such as Starbucks, public library, etc) places I might frequent. Obviously, I have no want/need for a 3G N7, and I think most others will agree.