Advertising your stuff just because a lot more interesting. Edgeio is a web service that will use your RSS feed to build listing for … well, pretty much anything you want to advertise. Things you have for sale, jobs, services, that kind of thing. It’s very, very clever (and looks pretty cool, too).
If you want to know more, just visit the site, and Fred and Om are much wiser than me, so I also recommend you take a look at what they have to say about it.