Version 0.5 of the WikiArticleFeeds Extension has just been released and is now available for download.
This version contains minor cosmetic changes and one major enhancement: it supports offloading feeds to FeedBurner.com. This is great to reduce the amount bandwidth your feeds consume.
To use the new functionality, all you have to do is register your feed with FeedBurner, then add <feedBurner name="nameOfFeed" /> to your article text.