Really interesting concept. I can see how this would prove useful in web design, especially when trying to learn and replicate popular layouts. What are your future plans? Also, my only criticism is that your website closely resembles the styles I equate to older pop-up advertisements.
Good point @nick_wesley, attractive visuals are very important to attracting and retaining prospective users. I can think of countless examples where I've liked using a product/service, but the unattractive or confusing UI led me to search for alternatives.