For what it is worth I always had some thoughts on combining eBay (community driven consumer to consumer framework) with craigslist (emphasis on the "barter" se

For what it is worth I always had some thoughts on combining eBay (community driven consumer to consumer framework) with craigslist (emphasis on the "barter" section) with a little old school amazon vibe (focus on books, movies, music, ect...) 1. A user would create an account and register Book "A" and identify what they are willing to trade for, say, Book "B" or Movie "A". 2. Obviously, users could barter directly among themselves Book "A" for Book "B". However, with a large enough community you could have algorithms suggest trades on mass scale - now it is no longer User A trades Book "A" with User B who has Book "B", but now User A can get Book "C" from User C and User C can get Book "B" from User B and User B can get Book "A" from A. The algorithm might conduct these large trades weekly or monthly. 3. What if User "A" does not send Book "A"? The ebay like community will encourage feed back and member rankings - allowing you to create settings to only accept trades from people with "X" ranking. Or in the short term - have members put in a $10-$20 deposit that will be forfeited any user that does not receive the trade.