It's a social behavior. A ritual. A fog.
If you know, you know. If you don't, don't ask.
The community runs on X. Every post is a transmission. Every reply is a signal. Join and vaguepost — the fog grows with each one.
Vagueposting is when you post something cryptic with zero context so people ask what happened — and you never explain. The point is the fog.
If you explain it, you already lost.

(Your silence does the marketing.)
Write something. Say nothing. The best ones get added to the fragments.