Facebook announced its ad network, Audience Network at F8 2014. With it, developers and publishers can serve targeted ads in their apps based on a user’s Facebook activity. For example, if you Like Game of Thrones on Facebook, expect to be served an HBO ad for the show in a partner app. While it’s extremely targeted to an individual, Facebook is not sharing personal information with third parties. Instead, it’s using the unique identifier on a mobile device. Here’s what happens when you load an app that’s using Audience Network to serve ads. When you sign into Facebook on a mobile device, that device shares the…

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