Google Shared Items
One of the great pieces of functionality in Google Reader is the ability to easily share articles you read. Mine can be found in the right hand column of this blog more or less half-way down.
"Google Reader allows you to easily keep track of your favorite websites and see all the updates in one convenient location."Get started with Google Reader
If you use another feed reader and would like to keep track of updates to these shared items, there is also a feed 
you can subscribe to.
To learn more about how to work with feeds, check out The Getting Stuff Done Handbook.
