Operating System/Platform Zealotry
They say the three topics you should never discuss in a casual conversation that you wish to keep polite and friendly are Politics, Sex & Religion. Maybe technology platform should be added to the list. Whether PC vs. Mac (not much difference there anymore), Windows vs. Mac vs. Linux vs. whatever, PSP vs. DS, PS3 vs. Xbox360 vs. Wii, people are becoming incredibly "zealous" and more polarized on such topics. Here's my more than two cents worth, for whatever that's worth these days...
Overview
My son's run-ins, my run-ins, etc....
What Really Matters (to me)
What Really Matters (to the market, apparently)
Dealing With Zealots