What do you know about RSS
 

RSS stands for Really Simple Syndication is useful to frequently publish all updated works including news headlines, blog entries etc. This RSS document also known as web feed, feed or channel that incorporate summarized text including metadata i.e. authorship and publishing dates etc.

I too agree with your answer that's why some website owners keep Rss feed on their websites.

RSS stands for Really Simple Syndication. It's an easy way for you to keep up with news and information that's important to you, and helps you avoid the conventional methods of browsing or searching for information on websites.

An RSS or Really Simple Syndication feed is a resource that shows the latest content from a source and the main thing about RSS is that it automatically updated. By submitting an RSS feed to different directories, you provide another way for your blog content to get syndicated and to distribute your backlinks. RSS is a real time update of your website. It helps to update your blog details to all the followers.