Joining AJAX and web services

The more I learn about AJAX (I'll soon have it fully implemented in some of my applications) the more I develop a view of it. AJAX looks to me as interactive web service. A web service to which you can send the request and it provides. But it doesn't require reloading of web page. Powerful indeed.

Looks like I'm not the only one thinking that way. I just found a very interesting website:

http://cows-ajax.sourceforge.net/

As you can see in the screenshot, they still have bugs to fix before convincing everyone that this is the real thing.