5 days ago, as an experiment, I clicked on the link that appeared on a comment thread (the one that says "let us continue this discussion in chat").
The system created a chat room for the thread, and copied comments there. Wonderful.
But now the room is useless (I said it was an experiment), so: how can I close/delete/remove/whatever that room? It "disappears" by itself when not used for enough days, or a manual action is required?