For bloggers and site proprietors, RSS is a decent Web advertising instrument.
It is a way to make a faithful rehash following. It encourages you develop your site by keeping you best of psyche with your perusers.
I think RSS feeds are still important because, if you are a website owner it helps you promote and share your content, and if you are a reader it provides you the content. It's still helps you getting traffic, because people loves various RSS readers such as Feedly where they find and read the content they love.