直接引用Adaptive Path的AJAX定义:
"Ajax isn't a technology. It's really several technologies, each flourishing in its own right, coming together in powerful new ways. Ajax incorporates:

standards-based presentation using XHTML and CSS;
dynamic display and interaction using the Document Object Model;
data interchange and manipulation using XML and XSLT;
asynchronous data retrieval using XMLHttpRequest;
and JavaScript binding everything together. "

顾名思义, 这是一个专注于Ajax技术的小组, 大家可以在这里交流有关Ajax技术的方方面面。