Facebook has been extracting information based on your daily activities within the social network in order to deliver personalized ads. Now the company's advertising system will further use data from apps you use and websites you visit not within the boundaries of Facebook. Facebook has long maintained internal profiles of users based on the comments they make and the posts that they "like" within its social network. these profiles will be furhter "enhanced" to include information based on some of the external websites and mobile apps its members use.

This type of interest-based advertising will start in a fe months in the U.S., Facebook said.

For instance, if you?re thinking about buying a new TV, and you start researching TVs on the web and in mobile apps, Facebook may show you ads for deals on a TV. And since it seems you're interested in electronics, Facebook will show you ads for other electronics in the future.

To quell potential privacy concerns, Facebook will give users the ability to review and edit their internal advertising profiles. By clicking on a button alongside Facebook ads, a user can see all the "interests" on their record, remove unwanted categories and add any desired categories.

Users will still be able to use the industry-standard Digital Advertising Alliance opt-out option (small blue arrow on ads) along with the controls that iOS and Android provide.

The new ad capabilities come as Facebook strives to ramp up its advertising revenue amid competition from Google while addressing persistent concerns about personal privacy on the world?s No.1 social network.