Feeds from this site

Feeds from this site are available in rss and xml. Click on the little orange xml icon in the right hand navigation column to access the feed.

What is a feed? It's basically a syndication service. A good definition can be found at Wikipedia. Many websites update their content constantly and instead of you revisiting the site, a feeds delivers the updates to you. Basically feeds push information to you as a kind of alerting service.

To receive feeds from websites, you'll need a feedreader. There are plenty of free ones around, such as:
SharpReader http://www.sharpreader.net/
RSSReader http://www.rssreader.com/
Bloglines http://www.bloglines.com/
NewsGator http://www.newsgator.com/

Bloglines is nice as it's web-based, so there's no program installation required and you can read it from any computer anywhere..

Once you have a reader you can add feeds from sites you visit that offer them. Nature magazine at http://www.nature.com gives you the option to syndicate it's news items, for example.