From a UI perspective, just my opinion, the site is somewhat obnoxious. First of all, you have to sign up to see what the site is all about. Then, when I tried

From a UI perspective, just my opinion, the site is somewhat obnoxious. First of all, you have to sign up to see what the site is all about. Then, when I tried to leave feedback, it required me to give my credentials (Twitter, Google, MSN, etc). This is bad UX... it doesn't allow me to get a sample of the site easily.