Bookmarks and the back button with Ajax at onjava.com
I saw on TSS that the article on the Really Simple History framework has been posted. Matt mentioned this at his Java In Action ajax presentation as he had spent a little bit of time trying to get the framework working but didn't have enough time or documentation to get it done. Now there are at least a couple solutions to deal with the back button/history problem (the other being dojo), so there is no reason not have that working in ajax apps.
Here's the printable version, all on one page with no ads.