Joshua Eichorn has gotten back to work on the HTML_AJAX manual and has changed things over to a bit more public forum - a new wiki.

There's all sorts of content already populated there, including getting started with HTML_AJAX, exporting your PHP classes correctly and much more. There's also links to the project's PEAR homepage and the API documentation to help you get down to the small stuff.

It's definitely coming along nicely and is a great repository for all things HTML_AJAX. And, since it's a wiki, things like spelling mistakes and new content can be added at any time.