LostFlirtFinder Global Database

RSS (most commonly translated as "Really Simple Syndication") is a family of web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format.

A good description you can find here:

You need a feed reader to be able to subscribe to an RSS Feed.

In computing, a feed aggregator, also known as a feed reader, news reader or simply aggregator, is client software or a Web application which aggregates syndicated web content such as news headlines, blogs, podcasts, and vlogs in a single location for easy viewing.

Here you have a description on feedreaders: