Facebook expands ad targeting system to its newsfeed

By Alexei Oreskovic SAN FRANCISCO (Reuters) - Facebook Inc is expanding the advertising system that lets marketers tailor messages to users of the No. 1 social network based on their browsing history, in the company's latest step to refine its ad business. So far, the system has been used to target graphical display ads on the right side of a Facebook user's page, based on websites visited in the past, such as for products or potential vacation destinations. The move announced on Tuesday will incorporate this system, called Facebook Exchange, to the ads in Facebook's News Feed. ...

via Tech News Headlines - Yahoo! News http://news.yahoo.com/facebook-expands-ad-targeting-system-newsfeed-220112897--sector.html