Facebook Tab Engagement Down 53% Since Timeline LaunchIt's also significantly affected the degree to which fans interact with tabs, which point you to different content at the top of the Page. According to data provided to Mashable by PageLever, tab engagement has dropped off 53% since brand Pages began adopting Timeline. The findings were drawn from approximately 500 Pages with more than 10,000 fans apiece. You can see tab engagement begin to declin
