RSS (Really Simple Syndication) allows users to subscribe to frequently updated content like news headlines, blog posts, or photos from websites. RSS feeds display this new content in an easy-to-read format, collecting updates from multiple sites in one place. Users can view RSS feeds in their browser, email client, on personalized web pages, or using a dedicated feed reader application. RSS feeds provide a convenient, fast way to keep up with frequently changing online content from many different sources.