Just in case anyone wants to follow up on the last XUL article by Harry Fuecks, SitePoint has published the 2nd of 3 parts in his introductory XUL tutorial, entitled Introducing XUL - The 'Net's Biggest Secret: Part 2. Seems like SitePoint split up the entire article series a little too much, because this one seems a little too short. The final installment promises to discuss XBL and RDF data sources, so that's looking good.