I have always had a philosophical problem with femtocells. Your carrier has awful coverage in your house, so they SELL you a box to plug into your home network. Maybe they charge you a monthly fee as well, maybe not. But of course the best for them is that while you are using your own bandwidth, you are not using their network. No matter.
If you use AT&T, while you are off-net and using your fixed line DSL or cable bandwidth via the femtocell, any data you consume counts – wait for it – toward your monthly data caps on AT&T. Truly this is one of the ballsiest moves by a carrier to charge you for something they didn’t give you. To be fair, I haven’t checked if Verizon does the same thing, but I wouldn’t be surprised.
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