"In computing, a feed aggregator, also known as a feed reader or simply as an aggregator, is client software or a Web application which aggregates syndicated web content such as news headlines, blogs, podcasts, and vlogs in a single location for easy viewing."

"Aggregator." Wikipedia. WikiMedia Foundation. 7 Oct 2007  <http://en.wikipedia.org/wiki/Aggregator>

Video from YouTube--Help Files - Aggregators (A brief synopsis of aggregator programs for a more efficient use of RSS feeds and automated downloads.)

Video from YouTube--What is and how to use a news reader?

Video from YouTube--What's an Aggregator?  How's it used? (podcasting)

Resources

Google Reader--Google's free service which allows you to subsribe by entering the URL of any website that contains an RSS feed.  If you use an iGoogle home page, Google has a gadget that can be added so you can see all the latest articles, etc. you have subscribed to in one location.

Bloglines--Another free service that also allows you to subscribe to search and subscribe to a variety of blogs, articles, and podcasts.  You can then share these with friends or publish to your own blog.

DIGG--A free service that allows you to search for content you would like to bookmark or subscribe to.  DIGG allows you to add friends so you can "dig" out the same information they find interesting.  Search for topics and find video, audio, blogs, etc. to subscribe to.