Earlier this year, Google launched a media measurement tool called Ad Planner, designed to assist media buyers in their purchasing decisions. The tool was available in limited release by invitation/application only.
Now, the tool is available to anyone with a Google account. There are also some new features for Ad Planner.
Define your audience by keywords and geography - You can use search terms and location to help determine your target audience
Site results management - Choose among three new ranking methods to display results from the sites you're considering running your campaigns on. Select from niche sites, larger sites, or a balance of the two.
Interactive bubble chart - this feature helps offers a visual that helps you compare demographics, frequency, traffic, and unique visitors.
International demographic data - Check out audience data from France, Germany, Italy, Spain, and the UK.
Does Google Analytics Share Data with Google Trends and Ad Planner?