If you'd rather not rely on an external service, it's super-easy to use SimplePie ( http://simplepie.org/ http://simplepie.org/ ) to merge feeds and, if you'd l

If you'd rather not rely on an external service, it's super-easy to use SimplePie ( http://simplepie.org/ http://simplepie.org/ ) to merge feeds and, if you'd like, output another feed: http://www.webmaster-source.com/2007/08/06/merging-rss-feeds-with-simplepie/ http://www.webmaster-source.com/2007/08/06/merging-rss-feeds... (Not the best tutorial, we should have one on our wiki. Disclosure: I'm the SimplePie lead maintainer.)