Free Feedburner Alternative and RSS Redirect plugin from SpecificFeeds.com.
This plugin allows you to easily switch from Feedburner to the FREE (and better) Feedburner alternative S-Feeds.com.
Read all about the service on http://www.specificfeeds.com/rss.
The plugin is very easy to use:
Once the redirect is active, your RSS-url will redirect to your new feed page where users can subscribe to your feed.
If you had former Feedburner subscribers, follow the steps as prompted in the plugin to move them over to your new feed (RSS as well as Email subscribers).