Guild Wars 2

They are against forum rules. There at least used to be a sticky “These forums are not a grey market,” though that was in the now defunct Black Lion subsection.

ANet does not in any way support direct player to player trading, especially to avoid the Black Lion gold sink.

The problem is that economics in Guild Wars 2 are way too unstable.
Introducing this system now would be disastrous.

The only way to really fix the issues the economy guild wars 2 is facing at the moment, would be an introduction of a new currency. So we basically start at “zero”. From that point onward it would be possibly to give us direct player/player – trading. Something we have longed for eagerly.