n. An advertisement that runs vertically down the side of a web page.
2001
The site is also selling the popular, new skyscraper ad unit, which runs vertically down the right-hand of some interior pages.
2000 (earliest)
The biggest is the failure of the banner itself. Publishers are finally experimenting with new ad formats. These are already visible at sites such as Forbes.com, which frequently employs what is referred to as the tower or skyscraper ad.
Additionally, through the Flowgo.com property, advertisers have access to powerful beyond the banner mechanisms, including opt-ins, newsletters, and pre-loaders, to effectively target their audience and reach consumers who are looking to be diverted and entertained, and thus are more open to advertising.