If you’re running Google Adwords advertising you need to be concerned with the “quality score” of your ads. If your ads score low they could be deactivated and the only way to run the ads again is to pay more. However, if your ads have a high quality score you’ll pay less per click and your ads will be promoted higher on the list of ads. Google uses the quality score to set minimum bids on specific keywords.
Since your quality score has such an impact on what you pay for advertising, advertisers wanted more information about how it applies to their keywords. Google announced today that they will do this with their new Keyword Analysis page.