Over the past 3 months that my page of 500 thousand fans, failed to send more than 200 people online for article shared. The reach and engagement has fallen dramatically, I thought it was a punishment from facebook on my page, but what I discovered was the opposite. Any site that I share on the page, as long as it's not mine, it's got back and sends more than 1,000 people online for article! I.e. facebook tagged my domain? What can I do? I complained to facebook ads Manager, but he says don't have knowledge of anything! I wouldn't want to change the domain of my website, because I will lose all of your background in seo. What to do? Anyone else been through this?