Picture advertisements placed on websites. Such advertising is often a staple of internet marketing branding campaigns. Depending upon their size and shape, banner ads may also be referred to as buttons, inlines, leaderboards, skyscrapers, or other terms. When using specifics, banner ads refer to a 468×60 pixel size. Banner ads can be static pictures, animated, or interactive. Banner ads appear anywhere on a site – top, middle, bottom, or side. Banner costs vary by website and advertiser; two of the most popular pay structures are Cost per 1,000 Impressions (CPM) and flat costs for a specified period of time.