Build an AJAX RSS reader

With a tiny bit of PHP on your webserver, Kris Hadlock shows you how to go about building an RSS aggregator in AJAX. (Kris is the author of Ajax for Web Application Developers
.)
The sample code is a very simplistic reader, but the tutorial is well-written and the code is clean.. extending the functionality to read Atom feeds would be a cinch. The PHP is needed, of course, to act as a cross-domain proxy for any feeds not on your own webserver. (JavaScript isn’t allowed to make off-domain requests.)
A working demo of the tutorial code can be found here.

