It is a great idea but needs more depth to it. I feel right now that the service is less important than the ads. I think it needs a more defined logo / header. I also think you need about three or four pages on the how and why. Simple stuff but give me an idea on why I would even need your site. Even though most know what to do the why is the most important part. Give me a reason and I might try it.
Take a look at
This site
It hass a great feel to it. Compelling graphics, and most importantly, many reasons why to use the site.
