Great stuff. Just to let you know that I've written up a XUL News Wire story titled "Script-Free Mozilla XUL Form Submission Prototype Upcoming" online @
>http://article.gmane.org/gmane.comp.lang.xul.announce/223 . In the future you're more than welcome to write-up and post your own XUL News Wire stories.

Looks great. I had planned on creating something like this, and I thought about using an attribute like 'serverpostnames' to do it. I also notice you can add a method for custom elements. Might be nice if it could automatically use the value property in this case.

I had thought of using a more generic name for what you call the serverpost tag, although I couldn't think of one. Then, the tag would have a type attribute to indicate the type. For instance, type="get|post|soap|xmlrpc|...", for generic posting.

Sounds like a good idea, I think we need a repository of XBL widgets, I have some that could be of interest to others and think the same goes for many people out there hacking XUL for a while, maybe we can show what a powerful technology XBL is