Copernic, the company that makes the great Copernic Agent meta-search product, has introduced the Copernic Tracker, a utility that automatically monitors websites for you and notifies you of any changes or new additions.
I love products like this — I have been using Website Watcher for some time now, and I love it. I just wish the Copernic folks could make the Tracker available on a trial basis — I like to check out software before I shell out $50 for it.