Microsoft upgraded adCenter, adding new features and links to help make managing campaigns easier. Several of the changes were requests made by community members. Among the new features: the ability to pause and resume ads and keywords, geographical targeting, and improved reporting performance on pages; faster reviews, dynamic feedback about why ads and keywords were disapproved, and inline notification when dynamic text causes your ads to exceed character limits. You can also now create multiple account users; and, in the U.S., get keyword bid suggestions and performance estimates for your content ads.
Microsoft also added a "New Features" link to the top of each adCenter page. These new sections link to further information about features and how to understand and use them.