Vaguebooking. At least it died out for me, when my age group grew up past high school. Specifically, the vaguebooking that would involve lame-ass "motivation quotes" or worse song lyrics that were obviously about some dramatic thing happening in their life, usually pointed at someone.

I still have one person who never moved on from high-school who still does crap like this, but now I just still follow them for the pure nostalgia and the joy of seeing these. Seriously, they show how immature they are, unable to actually go talk about their emotions a veil so thin of "please I want my privacy" while posting about it online.