OK, not a lot in the way of actual AJAX progress, except that I'm putting some of my routines in a library to make them a bit more reusable - I think you can probably see everything I've done here, and it's a bit of a mess. The small update is that I'm now creating a URL for a new post to include words from the subject, like all the proper bloggers do. I think this does some small good in getting better search engine results.
So, I put AJAX in the subject to make it appear in the URL. Sorry.