What you will be getting I can tell you is a user rating system, (dependent on feedback - like Ebays)
User Accounts for users.(also to stop spams being sent to the users who post adverts you will no longer place your email on the new version).
I would just suggest to allow more space for comments and replies. The only problem I see with Ebay feedback happens when a person needs to leave negative feedback. Often if you leave negative feedback the other party will too, as a measure of revenge.:roll:
