[limacharliewhiskey]

I've got a Samsung plasma, which is probably the most prone to burn-in among plasma brands, and I've rarely had issues with logos on HD channels. Most of the channels now use a light-gray or transluscent white logo that has very little chance of getting burned in. I haven't even had image retention (IR) from any of these logos.

Things that worry me are scoreboards from sporting events like football/baseball/basketball games, as those tend to have high contrast and very bright colors, and I get IR from them all the time. But I just run the screenwash utilities on the plasma, and the IR is removed in about 15 minutes.