RSS stands for Really Simple Syndication, and is a standard file format for feeds. Often you want to know when your favourite websites have been updated without actually visiting and checking them. Feeds from websites can inform your computer when a site has been updated. A feed is usually made up of a title and a short summary of the new content on the website. You can have a quick glance at the summary and decide if you want to click on it and visit the full version on the website.