| 摘要 |
An advertising package can contain multiple levels of advertisements ranging from small, unobtrusive ads at initial levels, to larger, more complex and more informative ads at subsequent levels. Viewers of a web page, or users of an ad-sponsored program, can initially be presented with a first level advertisement. User triggering actions can cause the display of a subsequent level advertisements that can provide further information without leaving the context of the web page or ad-sponsored program. The levels of advertisements displayed to a user can offer a more precise measure of user interest, and can be the basis by which future ad packages are tuned, and can be the basis of more tiered financial agreements between the advertiser and the publisher.
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