Some of you might remember the days when leaving a static image on a monitor for too long would "burn" it onto the screen, so that it was nearly always visible and would never go away. Thankfully, those days have passed (unless you have the moonah for a plasma screen, in which case the issue persists.) However, it seems LCD monitors can be susceptible to the same symptom, although it's not permanent.The good news is, leave your LCD off for a while and it'll go away. More info over at Widescreen Gamer.Unlike "Screen Burn" exhibited by some plasma displays, image persistence is not permanent. It is caused by the LCD crystals becoming "over-charged" from being left in one position for too long. The longer you leave your screen on, the more likely this is going to happen.