Pop-up and Pop-under

A pop-up is a small window that appears in front of your open browser. It may include advertising from a website, or it may hold website information such as a small help screen. Pop-ups can be intrusive (particularly advertising pop-ups) but they can be blocked using software.

A pop-under appears behind your open browser window, so you may not notice it is there until you close your browser. Pop-unders can be useful to promote tasks that you cannot undertake until you have finished a journey through a particular website, such as a post-sale survey.

By Sarah at UK Broadband Finder
Read my Broadband Glossary disclaimer

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