Uhhh, okay, I will let you argue with the instruction manual for the tv he cited. That can be your defense in court, or when you have to call Panasonic support, "but I read on the internet burn in is not a problem."
They could have just left it out if burn in wasn't an issue. As for the legal issue you would have to show that the TV had burn in. Dead body in a bath tub, pretty much sealed the deal for a mention in the hair dryer handbook.
http://www.wltx.com/news/story.aspx?storyid=56171
I can see that Plasma versus LCD is much like Bluray versus HD DVD. That is unfortunate, I was merely pointing out that Panasonic does still cite it as a problem. Plasma has a great picture, but LCD has been gaining, and in some cases the LCD, although few, has the better picture.
Here are facts from Panasonic on Plasmas, pay particular attention to the break in period, recommendations on gaming, and notice that there has been a great reduction in burn in, but it still can exist.
http://www2.panasonic.com/consumer-electronics/support/FAQs/details-FAQs+for+Plasma+TVs-UCM_PRD_CNT_001993#tv4
If Panasonic would have stated that they didn't have any more problems, I would have bought the Panasonic. I have had great success with their TV's in the past 10 years, and I just bought a 26 inch LCD, so I am a firm believer in their products, just didn't want to take the risk or have to worry about a problem, just because I wanted a hair improvement in picture.