Combining Multiple RSS Feeds to One RSS Feed

Do you blog in more than one place?  If so, you may be looking to combine these blogs into one single RSS feed – either for a widget, a Twitter feed, a Facebook feed, or a page on your professional site (see mine here). Yahoo! Pipes is one way to do this, and while it can be complicated, once you get it set up, it runs on its own. Check out the video tutorial below for full instructions.