So what about if I'm motorcycling around the world and want to ship my bike from Russia to Canada because I can't ride across the Beiring Strait?
I definitely think some are on topic as they're part of travel. However, books? That sounds a little more like immigration, which is off-topic. However if he's not transporting it for immigration purposes, but say, to donate to a charity or whatever, it still becomes shipping, rather than travel.
Otherwise, I plan on starting a company to drop-ship tvs from Korea to the USA. Should I ask? Heck no, it's not a travel question!
So I think when it relates directly to travel, then yes, it's on topic, and some of these shipping questions will be. But we're not about to be putting a blanket allow/ban on them, in my opinion.