RSS (Really Simple Syndication) allows users to track updates on websites through RSS feeds which can be read using various web and desktop based RSS readers. RSS feeds let users know when new content is published on sites they follow without having to manually check each site. Users can add feeds to their RSS reader by copying the RSS URL from a website and pasting it into their reader, or some sites offer a one-click button to subscribe. Organizing feeds into folders helps speed up reading large numbers of subscribed feeds.