Each week Joshua Fruhlinger contributes This is the Modem World, a column dedicated to exploring the culture of consumer technology. We're the family techies. The nerds. The ones who answer all your questions at family holiday gatherings about setting up new tablets and killing viruses. And it's sweet of you to buy us gadgets, but the chances of you getting us something that we don't already have and something that we actually want are, honestly, slim. So we take the gifts, say "How did you know?" and quietly return them for things we actu
