A similar technique is used already on the website http://www.wondersay.com
Here the URL path is the text to animate and the fragment hash stores the settings. Bitly is also used to hide the contents of the URL (and hence the messages).
This is clever, in that the entire content of the website is not stored in a database, but in external links. Obviously the biggest problem with this technique is having bots crawl your site, so Google's #! convention is used.