At Google we're always looking for ways to take advantage of work being done in other parts of the organization. So when a team approached us with a way to follow changes from websites without feeds, we jumped at the opportunity. Post by Liza Ma, Product Manager.
Feeds make it easy to follow updates to all kinds of webpages, from blogs to news sites to Craigslist queries, but unfortunately not all pages on the web have feeds. Today we're rolling out a change in Google Reader that lets you create a custom feed to track changes on pages that don't have their own 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.