Well i was playing and i just had this idea!!! All it is is forums were a person says say "selling 10 obsidian 23$ each" on the thread and people can post and say they want to buy it and once it is bought a person cant buy it anymore you have to go with that first persons buy. BUT if you say "selling 10 obsidian offer" people can name prices and once the person is satified they can sell it once another person is on. The advantage of this would be that a person could "sell" when there not online. There could also be sub-forums within these forums for different things like a mining sub-forum or a building sub-forum. So what do you think!!!