Google today is launching a form of behavioral targeting advertising named Interest-Based Advertising. Interest-Based Advertising allows advertisers to deliver ads based on hundreds of interest categories and previous interactions with those users. The beta is opening to select advertisers at first but will be expanded in the upcoming months.

Brad Bender, Google’s Product Manager in display offerings on Google Content Network, explained that Google is looking to make ads “more interesting” to users and more effective for advertisers. Interest-Based Advertising allows Google to do that by giving users control over their interest categories and advertisers the ability to target based on those categories and user’s previous actions.

Interest based categories are based on the type of web site a browser visits. Previous interaction is the second area of Interest Based advertising where Google is able to show ads to users based on their browsers previous interaction with that advertiser.