Just some quick feedback on your site. I'm intrigued by the product but I was really looking for a "features" link on the nav so I could quickly assess what it does.
I know you're trying to drive people to "sign up for free", but I guess I wasn't compelled enough by the text descriptions to do that in the absence of a concrete feature list.
Also, having pricing before features makes me click on pricing first, which seemed premature in my mind before I was even decided I was interested in the product.
Hope this helps!