Podcasts are largely distributed via RSS, and it’s a blossoming advertising market. Some services offer to splice audio segments with “current” ads, so that ev

Podcasts are largely distributed via RSS, and it’s a blossoming advertising market. Some services offer to splice audio segments with “current” ads, so that even older content can bring in new ad revenue, if I remember correctly. You can do ads with RSS, it’s just not as lucrative because the market is small and harder to sell than standard web properties.