The way Back with Ajax

Across on the Ajaxian blog they have a link to the work Andrew Mattie has been doing to address one of the biggest problems with Ajax - the way it effectively breaks the browser's back button.  Having never really jumped on the Ajax bandwagon I only realise this is a problem based on the numerous sessions I sat through and the frustration experienced when using an Ajax enabled site that doesn't work with the Back button.  Anyhow, hopefully the work Andrew has done will help to reduce this problem