You see the post − but you're not quite sure what it's about.

"Just when you think someone is your friend…" it might say. Or, "I am just beyond words right now...” Or maybe, "I can't believe you would do this..." (The ending ellipses tend to be a hallmark.)

Your brain starts to race. What's going on with this person? Is everything OK? Wait... are they talking about me? Immediately, you send a message or leave a comment. Something to show you're thinking about them and you care.

If this has happened to you, congratulations: You've been "vaguebooked."

"Vaguebooking" involves writing something intentionally mysterious on social media in order to generate buzz and get reactions from people as they try to figure out what your post means. Most of the time, experts say, vaguebooking boils down to a pitiful plea for attention on the part of the poster.