Google is making changes to its AdWords program intended to provide advertisers with more control over campaigns while potentially improving relevance for users. The position and frequency of ads are
displayed on Google has long been determined by a combination of the amount bid by the advertiser and the perceived relevance of the ad, as measured by clicks from users. Ads that performed well were
often boosted in position, displayed above ads with higher bid prices that were deemed less relevant by users.
Read the whole story at SearchEngineWatch, July 15, 2005 »