Going beyond the obvious jokes about genitalia and advertisements (or both...), here are some ideas I had while playing with it.<p>* An enhanced WYSIWYG for online editors or blogs. You could eliminate the need to go to any back end to create or edit content. The pulldown above allows for custom templates to be used to populate the page with boilerplate, or to even change the theme used, and then exported to the website to be "published"<p>* Online collaboration of websites and content beyond Word and Google Docs. Because it acts as an overlay, you could make some comments or changes to a live site and send that to another designer or copyeditor without changing what other users see.<p>* Visual successor to Greasemonkey, allowing users to recreate a page as they see fit. These enhancements could be distributed to others for new widgets or themes for existing sites.