I mostly feign ignorance, although it's often real. My parents are on Windows, while I've only used OS X and *nix for the past 7 years or so. My husband and I still do major upgrades for them, like moving over their data when they get a new machine, but that's it.

The best part is, because I don't help them, they've had to figure stuff out themselves, and they've gotten pretty good at it. I do get the occasional call, and usually all I have to do is remind them to just keep poking around all the menu options until they find what they want.

It's the main reason I haven't encouraged my parents to get a Mac, because then I wouldn't have an excuse to avoid the tech support. Meanwhile, my husband's parents have a Mac, and he is constantly on the phone helping them out.

Ignorance -- whether feigned or not -- is definitely the way to go.

Maybe this depends on where you are -- or maybe you don't have many friends with young kids -- but I would not say that breastfeeding is "at odds with the norms of public behavior in the USA." My friends nurse in public all the time, and nobody bats an eye. And I don't see any flesh, and the men don't get aroused. It's just normal and unremarkable.