Open up AJAX (Score 5, Insightful)

There is a need to standardize (as much as possible) the way that AJAX will work in the browser. There are a lot of code-writers and code-copy-n-pasters out there. When you visit one of these sites, you know because the browser may act funny due to poor programming/hacking of Javascript interacting with the server. AJAX is much bigger than just XML messaging, it's an opportunity to bring a more traditional application model to the browser via Event handling and dispatching. Notice that if you have an engine or framework that is well built, it's quite simple to add event handlers like key presses or mouse clicks or even drag-n-drop. If one was to script each element on a page, that gets heavy and can slow the browser. Which - btw, is why AJAX hadn't caught on until recently: computing resources were not sufficient in many cases.

That being said, everyone should look at http://www.sourcelabs.com/ajb/AJAX Mistakes. There's also a nice list being compiled at http://www.openajax.net/OpenAJAX .net. This combination of technologies has been around for a while, however, as people find them more useful and interesting, there is a need for good information and a solid foundation for folks to work off of.