From ETCON, Cory Doctorow provides some tantalizing notes on Leveraging RSS at Disney: from Collaboration to Massive Content Delivery:

Had to transition go.com from an expensive portal to a free-to-maintain portal by pulling in newsfeeds over RSS and XSLT-transitioning them to decorated web pages -- made it easy to add new partners to the portal. Made it easy to wpit out to WML for mobiles, and to re-syndicate to the rest of the world.

It took a while to show the powers that giving stuff away didn't mean a net reduction in eyeballs-on-ads.

I also think this is pretty cool:

Internally, we are also leveraging RSS as a means of collaboration and communication for our software engineering teams. All engineers maintain blogs and use NewsAggregators to track tasks, projects, and new technology. In addition, we are tracking changes on our Wiki via RSS.