Google对于其广告质量得分(quality score)的若干备忘录 [incomplete]

Quality Score for Google and the search network

Quality Score for Google and the Search Network is a dynamic metric assigned to each of your keywords. It's calculated using a variety of factors and measures how relevant your keyword is to your ad group and to a user's search query. The higher a keyword's Quality Score, the lower its cost-per-clicks (CPCs) and the better its ad position.

Learn how Quality Score is calculated for Google and the Search Network.