In the July 2004 issue of asp.net PRO magazine there was an article of mine titled Displaying Syndicated Content (link works only for asp.net PRO subscribers), which examined how to read in a remote RSS feed and display it in an ASP.NET Web page, including how to accomplish this using RssFeed, an open-source custom server control I created for displaying syndicated content. In this months issue, I have a related article called Syndicate Your Site (again, URL for subscribers only), which looks at the inverse of displaying syndicated content - creating it. The article shows how to turn database data into an RSS feed.
Since the July 2004 issue, I've gotten a number of positive correspondences regarding RssFeed, including some great suggestions for enhancements. If you've not seen RssFeed before, check out the live demos. Essentially you can display an aesthetically-pleasing RSS items in an ASP.NET Web page with two lines of code.
For more free server controls, check out my Code Projects page.