I think design/usability are acceptable. At least i can understand it after playing with it for less than 1 minute. The only thing that you need to be careful

I think design/usability are acceptable. At least i can understand it after playing with it for less than 1 minute. The only thing that you need to be careful of is probably a market-risk. This type of site is platform model and usually run into chicken-and-egg problems, therefore, takes longer than you imagined to take-off. Overall, the idea is great. It certainly has potentials. Keep it going! ;)