Interstitials:
If a browser window is entirely filled by an ad it is called an interstitial. Only if the user closes the interstitial window, the initial browser window will appear.
User acceptance can be noticeably increased through interaction with HTML or Flash components of the interstitial. Since many users feel that interstitials disturb their browsing experience, this type of advertising should only be used in exceptional case.

Superstitials:
This ad type was developed by Unicast, an American company, the superstitial is another form of advertisement that interrupts the user’s experience.

A superstitial uses Flash movies (latest version) that are displayed on a large format, and allow for user interaction.
While the user remains on the site, the data that is required for the advertisement movie to play is downloaded in the background. The browser window in which the superstitial is incorporated is invisible until all data is downloaded and the user goes to a new page of the site. The superstitial does not interrupt the user’s browsing experience, and can be considered as a worthwhile advertisement through which a user can interact and be entertained. The response rates of this ad type can be considerably higher than traditional formats.

Screenshot: Example of a Superstitial Creative on large automotive website


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