Looks very cool, but it doesn't seem to be able to rearrange divs and other elements, which is what I really need.<p>For any large page or template based system, there is almost always going to be a backend involved, which means that dynamic editing tools like these don't serve much of a purpose.<p>However, for one off pages like landing pages or quick and dirty signup pages, something where you could layout all the elements and text with a simple wysiwyg would be a blessing.
There's a recent Railscast about this: <a href="http://railscasts.com/episodes/296-mercury-editor" rel="nofollow">http://railscasts.com/episodes/296-mercury-editor</a><p>Looks very slick!