Got some spare items you don’t need anymore? Why not put up an ad in here and who knows maybe someone will take it off your hands in exchange for a chunk of gold. Or perhaps you are looking for a certain item, in that case put an ad up letting people know you are interested in purchasing.
Add Buying: or Selling: to the start of your topic, so we know which you are doing. Or add Auction: instead if you want to auction the item off.
Once an item is sold, change the status of the topic to closed, but leave it up so there is a record of transactions.