I think it's really hard to review it without understanding the goals of the project.

Are you trying to make money with it? Are you trying to grow it to 1M users? Are you trying to build a feature for Pinterest to buy?

You're getting a lot of different opinions here. Some are saying its a wonderful, social product with a lot of potential. Some are saying you aren't solving a real problem, which gives your project a fairly short shelf life.

It just depends on the goal, what do you hope to achieve with it? I've always had a hard time evaluating things without knowing this.