What are Google Subscribed Links?

Lord Jezo

I noticed at the bottom of my search preferences a new (to me) thing about saving something about subscribed links.

Then I found this page:

http://www.google.com/coop/subscribedlinks/

What you can do with Subscribed Links

* Create search results specific to your product, service, or expertise.
* Design a basic version in minutes to see how it works.
* Build a dynamic version using XML, TSV, or RSS files or feeds.
* Include images in your Subscribed Links.
* Include gadgets in your Subscribed Links.
* Test your Subscribed Links interactively and get debugging messages.
* Define query patterns using lists of keywords or regular expressions.
* Invoke the calculator to help construct your results.

It makes no sense to me. What is it and what can it do for me?

CmdPrompt

This is a better explanation:
http://www.google.com/coop/docs/subscribedlinks/basics.html