RSS feed is essential. It helps you in site ranking, but the unique content must be available on your pages. If you are directing multiple feeds to your page, it is not practical or not useful to take all the links and rewrite the content on your own pages.

RSS uses a family of standard web feed formats to publish frequently updated information: blog entries, news headlines, audio, video.

RSS aggregator, also known as feed reader, is a program that runs in the background and constantly waits for your favorite sites to post new content.