Sheila and I are engaged in the very early stages of planning for a fully-integrated DGRUS Flymart. What we are looking at is a functionality that would let any member of the network offer up items for sale in a smooth-looking storefront. Anyone could buy from the flymart, whether a member of the network or not. Sellers would be responsible for fulfillment. Money transactions would be handled transparently by an extremely highly-respected third party. Members could put mini-storefronts on their "My Bag" pages or on any other social network page where such applications can be dropped in, such as Facebook or MySpace. We would want fees for transactions to be a good deal, too, definitely less costly than eBay.
Reaction? Thoughts? Among other things, do you prefer a minimum transaction fee of a set dollar amount, or some percentage? Fixed, or sliding?