Many pop-ups (3)

I believe the answer is:

ads

'many pop-ups' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for ads that I've seen before include "Notices" , "Classifieds (abbr)" , "Promotions" , "Commercials" .)

I've seen this clue in The Washington Post, the L.A. Times Daily, the USA Today and the LA Times.

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