Loophole

Contacted in-game.

There used to be one single thread for these deals, and they found it didn't work. Hence why there's is now a sub-forum dedicated to it. If it annoys you, take it up with the Admins. Otherwise you're hijacking other player's threads, and as far as I'm aware, it's a warnable offence.

Forum etiquette. If you want a deal, you make your own thread. Potential buyers for the OP might see your post and prefer to buy from you. So you hijacked one of his buyers. There's not a single thread for these deals for a reason. Everyone makes their own thread.

Make your own thread stating so. Stop hijacking other player's threads...