Announced yesterday and made live today, Google's updated interface allows publishers to see more of how their ads and ad spaces are faring.
Google touts the updated AdSense's "more insight, more efficiency and greater control" as reasons to upgrade.
Google picked up AdSense in 2003 when it bought Applied Semantics for just over $100 million.
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How AdSense works (from Wikipedia)
- For contextual advertisements, Google's servers use a cache of the page to determine a set of high-value keywords. If keywords have been cached already, advertisements are served for those keywords based on the AdWords bidding system. (More details are described in the AdSense patent.)
- For site-targeted advertisements, the advertiser chooses the page(s) on which to display advertisements, and pays based on cost per mille (CPM), or the price advertisers choose to pay for every thousand advertisements displayed.
- Search advertisements are added to the list of results after the visitor performs a search.