Page "Pop-up ad" Paragraph 18

Users of websites and web applications continuously experience unwanted pop up ads through the course of their normal interaction with a web browser.

Ordinarily users respond by dismissing the pop-up through the " close " or " cancel " feature of the window hosting the pop-up.

Because this is a typical response, some authors of pop-up advertising depend on this, and create on-screen buttons or controls that look similar to a " close " or " cancel " option.

When the user chooses one of these " simulated cancel " options, however, the button performs an unexpected or unauthorized action ( such as opening a new pop-up, or running unauthorized commands on the user's system ).