its not really an image is it? I'm not all that technical when it comes to hd displays, but I assume that black borders are just lcd crystals that aren't "lit" or something. so if they are inactive, how can they burn in? (of course I'm just speculating here

)
anyway, I'll see as time goes by; I've played for hours straight on my hdtv & when I do something else with it (say watch a movie) I've noticed nothing so far