This module allows you to have your front page, browse categories sections to have a small thumbnail. Allowing your pages to load faster. When the user places there mouse over the thumbnail it pops out into a large image. This saves download times on the user. They will place there mouse over the ad itself and see the larger image. They may choose not to see the ad and move on to the next. They may choose to see the rest of the add now and click it and now see the ad itself.