Not sure if this will work on here, but I stumbled across a similar thread on a completely obscure forum whilst looking for something else (no, not porn) and thought it might be worth trying.
Basically, the each post should be a comment on the latest person to post a message within this thread.
E.g. I will be the first poster, so the next person might write "non vintage – right-wing dictator, best friends with Lolly’s Mate" or "non vintage – dull posts and useless tips a speciality" or "non vintage – who?"
(and so on, with each person making a comment automatically opening themselves up to receiving a comment)