Interactive advertising

Form of online advertising that requires the user to physically interact with the ad in some fashion.
==Known Forms of Interactive advertising==
Viral marketing often has users search for clues and extra content all while delivering advertisements.
Web banners sometimes contain role-over flash games/quick links that users can interact with. An example would be a boxing match where you have to beat the opponent. If you do, it takes you to another website. If you lose, it will probably also take you a website.
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