Facebook plans to shut down FBX, the ad exchange that allows advertisers to buy retargeted desktop ads using third-party tools like Criteo and AppNexus. The news was first reported in Adweek and The W
Last year Facebook <a href="https://techcrunch.com/2012/06/13/facebook-exchange/">tested out</a> and then <a href="https://techcrunch.com/2012/08/25/facebook-exchange-retargeting/">launched</a> Facebo