Exactly. I had to reload the page to see it. Once I tried it out, it seemed like a pretty cool idea. It just needs some smoother execution.
The reload was one thing and others have mentioned the confusion of the "try it" button. Maybe a "Try It" arrow pointing to that lower left corner would help? Then change the original "Try It" to "Sign Up".
Edit: To note that the overall site seems pretty cool! Keep going...
