What? LED screens get burn in? OMG!
When we (at Pioneer) showed LED screens with burn-in at CES quite a few years ago people thought that we rigged the test. No we didn't. We just wanted to educate the masses that plasma wasn't the the only tech that had issues with image retention. Did anybody listen? Not really.
I know I'm behind in the resolution war but my 10 year old PRO950 still looks great and the 9 year old KRP600 does as well and neither suffer from burn-in.