I always thought interface opacity was just for the sake of being able to see stuff. lol Cause I always keep it real low in stuff like Minecraft. I had a plasma for a long time and the Minecraft and Halo Reach HUD would get burned in, but after a while it just went away and never mattered. Games where a map would be in one spot for hours would burn in, and then just be gone later. Don't know why it's so bad for some people.