The Google AdWords blog announced Quality Score improvements.

Google will replace their static per-keyword Quality Scores with a system that will evaluate an ad’s quality each time it matches a search query. This way, AdWords will use the most accurate, specific, and up-to-date performance information when determining whether an ad should be displayed. Your ads will be more likely to show when they’re relevant and less likely to show when they’re not.

Google will no longer mark search ads as “inactive for search.” The new per-query evaluation of Quality Score affects you in that keywords will no longer appear as ‘inactive for search’ in your account. Instead, all keywords will have the chance to show ads on Google web search and the search network (unless you’ve paused or deleted them). Keep in mind, however, that keywords previously marked ‘inactive for search’ are not likely to accrue a great deal of traffic following this change. This is because their combined per-query Quality Score and bid probably isn’t high enough to gain competitive placement.

Google has removed the “minimum bid” metric and replaced it with “first page bid”. As a result of migrating to per-query Quality Score, Google is no longer showing minimum bids in your account. Instead, Google is replacing minimum bids with a new, more meaningful metric: first page bids. First page bids are an estimate of the bid it would take for your ad to reach the first page of search results on Google web search. They’re based on the exact match version of the keyword, the ad’s Quality Score, and current advertiser competition on that keyword.

For the full Google blog post, visit adwords.blogspot.com

If you have additional questions, you may want to check out the FAQs on this topic or ask your question in the AdWords Group.