I noticed on close inspection of my Panasonic TH50PX60 that there's a pixel-level dithering effect used to render a lot of the colours on screen. Obviously, from more than a few feet away, this effect blends very nicely into stable-looking colours, and is likely the primary reason for it being there. But I'm wondering if this dithering is in any way an added bonus for preventing screen retention? I noticed that the grey side bars you can have in 14:9/4:3 mode seem to be greys which require the dithering effect to render the colour (as opposed to a solid colour which the screen renders constantly) - perhaps this is deliberate so that the bars on the side don't cause any damage while watching (since the pixels are constantly cycling between colours)? Anyway, perhaps someone more experienced in modern plasma technology can elaborate?