Companies worldwide now have access to the Facebook’s user information database, and can use this information to target ads towards users in mobile applications outside of the Facebook network. This transfer of information across networks will likely have a profound impact on the world of digital advertising.
In April, the social network announced it would begin tapping its enormous vault of personal information on users to show them ads on mobile apps outside of Facebook. At the time, the ads were available only to a small number of advertisers and mobile apps. Now, they can be purchased by any of Facebook’s 1.5 million advertisers, and can appear on any app.
Read more here:
http://blogs.wsj.com/digits/2014/10/07/facebooks-ad-network-opens-to-everyone/
http://www.insidefacebook.com/2014/10/07/facebooks-audience-network-now-available-worldwide/