RSS is Your Friend

People subscribe to blogs using a RSS feed so that they receive regular updates whenever a blog is updated.

RSS is short for Real Simple Syndication and uses a simple web communication language called XML

RSS “pushes” a feed of a blog post or podcast episode to the subscriber and then “pulls” the subscriber back to the blog site.

RSS allows you to subscribe to hundreds of news websites and have new information sent to you throughout the day.

More info -BBC Description
Time magazine story on RSS
BLOGLINES

www.bloglines.com