Yahoo! Pipes is an interactive feed aggregator and manipulator. With Yahoo! Pipes, you can create feeds that are more powerful, useful and relevant.
Since Yahoo! Pipes was introduced, users have found new ways of using the service to generate customized user content or feeds. One of it is a master feed for all your RSS feeds. With Yahoo! Pipes, you can gather all your RSS Feeds and put them all together. This can be helpful if you have several blogs and and you would want to have a master feed of your blog posts and comments. Other things you can add are your Flickr photos, your del.icio.us bookmarks and comments from blogs or sites that you specify.
Here’s how I created my master feed for JaypeeOnline:
After you’ve created your master feed, you can publish it and post the permalink in your blog for your readers. There’s a lot that you can do with Yahoo! Pipes, you just have to be creative and use your imagination.
For a detailed instruction on how to create your master feed, read this article from LifeHacker.com
You can also see the sample feed that I made for JaypeeOnline. It displays the recent 20 posts and comments from my blog and flickr photos.