AJAX using jQuery and cfjson.cfc

Quoting Chris Pound:

This tutorial shows how to do AJAX using jQuery and cfjson.cfc.
The jQuery AJAX is exactly like the stuff we've demoed and
played with in our Javascript training. The cfjson.cfc is the
interesting part ...
http://www.365labs.net/cf_jquery/jquery_coldfusion_quickstart.htm

Here's where cfjson.cfc comes from:
http://cfjson.riaforge.org/

This is a very compact way to communicate arbitrary data from an
AJAX submission to a CFQUERY and back.