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Ask Shama: Facebook’s Timelines and How to Tell if You’ve Been Unfriended

Dear Shama,

Just when I felt I had a good grasp of everything, Facebook released even more news. Can you please help explain a few things to me? What is the timeline everyone is buzzing about? Can you opt out? And, I’ve already heard rumors that you can see who unfriended you. Is this true? I find that greatly discomforting. Help us please, queen of social media!

—Haley G., teacher from …