Winer has a short, simple explanation of what news aggregators are. Now all we need is a similarly clear and simple explanation of RSS. (All I could find were pretty technical pages for RSS 1.0 and RSS 2.0 (the latter link is not working this morning, however).
5/5/2003 at 5:47 pm
I’ve written one! http://www.faganfinder.com/search/rss.shtml