Why are rear projection TV's and plasma screens more subseptable to screen burn than normal CRT TV's? I'm just about to get SKY+ and slightly worried about screen burn on my Panasconic TH42PWD4 plasma. I tend to watch a lot of sport and I'm a bit worried about all the logo's and score box's that will be static on the screen! I see some people use their plasma screens as PC monitors to surf the net, so with all the static parts of yor average browser (Internet Explorer, netscape, etc), isn't screen burn an issue afterall? Thanks for any info, Glenn.