A Few Links    

Matt Denton fine site which includes XAs
Karen Nakamura's site also has a nice review of XA cameras.
Olympus XA Community on Flickr - over 100 great photos and you can add your own - not to be missed.
The XA Way
24 pics button 24 XA Cameras in different states
Alphabeticks - Serendepity of the Alphabet (under X!)