RSS stands for “Really Simple Syndication” which is a really easy method of delivering content over the internet. It allows web masters an opportunity to provide concise summaries of their web posts to prospective readers.
The RSS feed is updated when ever a new post is published on the source site. Contents in rss file are organised as headline; article summary and link back to the online article.
It is necessary to check and confirm whether the RSS file created is valid or error free. Usually there will be server side script which runs to fetch the summary of the post and add that to the rss file of the website.
To know about the Online Validators and to try it your self, please visit :