A lot of businesses are trying this right now, along with the Facebook exchange retargeting stuff. The big question is going to be though whether businesses see

A lot of businesses are trying this right now, along with the Facebook exchange retargeting stuff. The big question is going to be though whether businesses see a big enough ROI to continue to reinvest. Facebook burned through a lot of businesses with the regular ads who gave up, new ad products give them another chance but unless some of it sticks it is only a matter of time before revenues start falling.