Magic Trade Center Has been picked for link of the week for it's potential. I can see potential in the site, it just has to get of it's feet. Once a few people go and start trading it will become more popular and more and more until it will flourish. As the site develops it might even get a message board to trade on there! That way people could trade more quickly! You might say that then it would be just like MOTL but it would be smaller so more people would like it. You have/want list would not be off of the top after 5 minutes.
The site has other advantages also, it has a killer combos page that you can base decks around or give your deck the edge it needs! I think this site has great potential so go check it out!