I have just thought about the feeds in XML for Google Reader or similar readers. I was not sure if WordPress has this feature or not. As it turn out, the feed is generated automatically and nothing needs to be done. The URL to the feed is /feed, so in my case this is http://www.bestresizer.com/feed/. Try it yourself!
The feed is useful for users who want to subscribe to your blog and for automatic notification of search engines of a new content on your blog.