Google has made a small, but important, change to it's Google Reader
software, allowing users to subscribe to web pages even if they have no
RSS feed.
This means that you can keep track of any page using
Google Reader by adding the page URL. Google will then periodically
check the page for updates, which it will publish with a snippet of the
page to help you decide if it's worth checking out.
Site owners who have decided against RSS for commercial or other
reasons can add the following tag to any pages they don't want Google
to create a feed:
<meta name="googlebot" content="noarchive">
Webmasters can also block all or part of their sites from the Google index using the
robots.txt protocol.
