Mackenzie_Chp. 15

Pop Ups/Pop-Unders

When you access the Internet, you no doubt have seen a window or a creature of some sort appear on your screen in an attempt to get your attention. These advertisements known as pop ups, and they often appear when you access certain sites. Pop-ups are usually larger than banner ads but smaller than a full screen. Pop-unders are ads that appear underneath the webpage and become visible only when the user leaves the site. For example, if you have ever visited a travel website, you probably were hit with a pop-under ad for Orbitz, one of the heaviest users of this form of web advertising.

https://webgilde.com/en/pop-under-pop-up-ads/