Today, we began rolling out improvements to the Quality Score algorithm, which will update the Quality Score for keywords in your account over the next 3 to 4 days. As I mentioned last week, the goal of this change is to improve the quality of ads that we serve to our users by making it easier for high quality ads to enter the auction while also discouraging low quality ads. In addition, this change improves our ability to set minimum bids for keywords where we have limited data. As a result, you may see the minimum bid for your keywords increase or decrease based on the updated algorithm.To better understand the quality of your keywords after this change, we suggest that you enable the Quality Score column. This will allow you to quickly view the quality of the keywords in each of your ad groups so that you can make improvements. For example, if you notice that the minimum bid increases for a number of your keywords, you may want to consider optimizing your ad group to make it more relevant or deleting the keywords that have high minimum bids.