Dapper
Dapper looks like a super-slick screen scraping app that automatically creates RSS/XML (amongst other things) for you (the demo is quite nice). While clicking around the site I ran into a few other cool looking things: Swivel (a data sharing site I had seen a while ago, but not looked at since), Particls (looks a bit like Twitterific for more than just Twitter) and Mashery (out of my league for current projects, but a good thing to know about).