RSS ("Really Simple Syndication") is a family of web feed formats used to publish frequently updated works. It allows you to subscribe to feeds from RSS pages which will automatically update when new information is added to the page.
Google Reader is a simple way to subscribe to RSS feeds. All you have to do is go to the Google Reader tab in Gmail and click on the add feed icon. After subscribing you can go through the information you have subscribed to in the Subscription side bar.
Here is the site you use to add an RSS feed to your webpage - Feed2JS
