[Talyn]

Anything with plastic can burn in.
your not burning in on the crystal display, your burning the image into another "portion" of the layer.
I've seen many LCD's with burn in.

No screen problems here.
Mine is usually off if i can muster it.
But s2u2 is locking apps off when the phone goes into standby now, so i might have internet connection screen burned in if i keep it up.