I think there is a market opportunity. Google has basically abandoned Feedburner. They have been doing a "migration" and my experience with that was terrible. It basically blew up and lost subscribers. And I'm not alone. If you look at the Feedburner "help group" http://groups.google.com/group/feedburner-statistics/topics?... you'll see a ton of people complaining about lost subscribers and there is not one response from anyone at Google.
