Vaguebooking
Etymology
A portmanteau of "vague" and "Facebook," coined in the late 2000s as social platforms made such posts ubiquitous. The name has outlived its specific platform reference, now covering the behavior on any network.
noun · /VAYG-book-ing/
Posting a deliberately vague, cryptic status update online to fish for attention, sympathy, or curious replies.
What it names
A specific attention-seeking maneuver — withholding the point on purpose — that invites others to ask what's wrong.
Example
Her post — “Well, that’s just great. Guess I know who my real friends are” — was classic vaguebooking, and the worried comments poured in.
Related idea
Cousin to subtweeting, but aimed differently: subtweeting obliquely criticizes a specific person without naming them, while vaguebooking withholds the situation itself, dangling a mystery to draw concern from anyone reading.