| We could list what we're willing to trade. And as trades go on we can update our lists (remove or add those available). The most current post by a person will contain everything he or she has to trade. It's a slight embellishment of Jake's idea. Simple, but nothing difficult is necessary.
Maybe, as a rule, if you want a certain type of mushroom, you take it from the last person who posted who has that type of mushroom. Then the trading will get spread out. |