"Some are sensitive to IR, but with the proper precautions and care you can avoid any issues."
Proper care my ass!
I consistently beat the hell out of mine, leaving XBMC up while I listen to music or, or turn on the 360 then walk away for a while. Hell, my 360 is just sitting in Fallout 3 right now as I check my email.
I'll agree that people fear what they don't understand, and they fear what they perceive to be expensive. Burn-in is a perfect example of that irrational fear.
EDIT: Let's beat this horse a little harder. When it comes to making light, what's the difference between a plasma and a direct-view CRT? Not a god damn thing! Why don't we constantly have threads popping up about people fearing that they will hurt their $200 CRT?