The Google Reader Blog has announced a new functionality which allows creation of custom feed for web pages that don't offer their own feeds.
This will ensure a track of the website changes made on any web pages. These custom feeds will in turn alert you about every updated information on your favorite web pages. Google Reader initiated this new feature to easily follow the updates through its custom feed, even for those websites that do not have their own RSS feed.
These custom feeds are most useful if you want to be alerted whenever a specific page has been updated. For example, if you wanted to follow Google.org's latest products, just type "http://www.google.org/products.html" into Reader's "Add a subscription" field. Click "create a feed", and Reader will periodically visit the page and publish any significant changes it finds as items in a custom feed created just for that page.