| 摘要 |
Systems and methods for automatically changing the rate of web page advertisements served by or on behalf of a publisher based on the number of web page advertisement impressions counted by or on behalf an advertiser are disclosed. By monitoring the number of impressions counted on or behalf of an advertiser the systems and methods can repeatedly determine a new rate for advertisements to be served at. This new rate can be anticipated to cause the number of impressions counted by or on behalf of the advertiser by the end of a contracted period of time to be at least equal to a contracted number of web page advertisement impressions.
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