RSS (most commonly expanded as "Really Simple Syndication") is a family of web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format. Read more on Wikipedia

Installing a news reader that displays RSS feeds from the websites you specify allows you to keep up to date with all your favorite content by checking the RSS feeds you have subscribed to and displaying new items from each feed. Instead of downloading a dedicated news reader, you can also use a web-based news reader.