RSS (Rich Site Summary) is a format for delivering regularly changing web content. Many video-related sites, video sites and publishers syndicate their content as an RSS Feed to whoever wants it.
Why use RSS? Benefits and Reasons for using RSS
RSS solves a problem for people who regularly use the web and would like to get updated in new videos quick. It allows you to easily stay informed by retrieving the latest content from the sites you are interested in and all the latest new videos in this site. You save time by not needing to visit each site individually. The number of sites offering RSS feeds is growing rapidly and includes big names like Yahoo and Google News.