Banner Ads are advertisements that stretch across the top (or bottom, or side) of a webpage. They are often unrelated to the content on the page.

Banner ads were one of the first kinds of advertising used on the World Wide Web. There is some question as to whether or not they are very effective advertisements; many users find them annoying.

You should remember that banner ads are OFTEN a scam--they are designed to try to collect your personal information or install viruses or other harmful software on your computer.

See Pop-Up Ads.