Jason Kottke has a really nice post about his initial (successful) atempt to integrate Ajax and XMLHttpRequest into his site. At the top of the home page is a drop down populated on the fly, with links to various portions of his site, as well as on-the-fly RSS feeds of other popular sites (like BoingBoing, NYTimes, etc).
I just wish I could understand it all… Seriously — I don’t know if it’s because I’m too busy, or because I’ve been simply tired of it all recently, but I just can’t wrap my head around XMLHttpRequest. Maybe it’s because I’m a dope. Yeah, there you go.