RSS is a mechanism used to distribute news content without depending on the browser or email client.
What are the advantages of RSS?
In general it means time savings because, thanks to RSS, you stay ahead of what's new without having to browse every site you normaly visit. An RSS reader aggregates the content for you to view in one place, this saves time and brings you the content like when you're reading a newspaper with the advantage to view only headlines. You're in control of which articles you want to read.