Good idea. It would also be nice to have different sections in their own <div> with the ability to assign a class to them, so they can be easily styled differently. A related idea would be to give the option for the current sections (e.g. Listing Title, Subheading, Description, etc.) to have editable titles and to be able to toggle the display of those titles -- and then, ideally, the ability to add custom sections (e.g. Description Right).