3 best definitions of What is RSS?
1- Definition by Mark Pilgrim
RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired, news-oriented community sites like Slashdot, and personal weblogs. But it’s not just for news. Pretty much anything that can be broken down into discrete items can be syndicated via RSS: the “recent changes” page of a wiki, a changelog of CVS checkins, even the revision history of a book. Once information about each item is in RSS format, an RSS-aware program can check the feed for changes and react to the changes in an appropriate way.
RSS-aware programs called news aggregators are popular in the weblogging community. Many weblogs make content available in RSS. A news aggregator can help you keep up with all your favorite weblogs by checking their RSS feeds and displaying new items from each of them.
2- Definition by Paul Gil
If you are an “Information Junkie”, then RSS is perfect for you.
RSS is about getting live web feeds directly to your computer. RSS takes the latest headlines from different web sites, and pushes those headlines down to your computer for quick scanning.
The acronym RSS stands for many versions of the same thing.
- Really Simple Syndication
- Rich Site Summary (RSS 0.91)
- RDF Site Summary (RSS 0.9 and 1.0)
- Real-time Simple Syndication (RSS 2.0)
In each of the above meanings, the purpose is the same: to have web sites of your choice deliver their latest news directly to your monitor. So instead of having to visit 14 different places to get your weather, sports, favorite photos, latest gossip, or latest political debates, you just go to one screen and see it combined (“aggregated”) into a single window.
The RSS headlines and stories are effectively immediate. Once published at the source server, RSS headlines take only moments to get to your screen.
3- Definition by Leelefever
RSS makes it possible for you to use a single tool to easily read news and posts from weblogs and news sites across the web. The news comes to you without using email. Here is how you can get started:
On a majority of
weblogs and some online community discussions and news sites, you’ll see links and buttons like these:


or:
If you’re like me, you clicked these buttons, only to be more confused by what you saw. This entry will help you understand how to use these links and an “RSS” reader to read the news and why it’s something that could affect your day-to-day news reading and browsing.
From now on, I’ll refer to the tools and processes as “RSS” (which means “Really Simple Syndication” or “Rich Site Summary” depending upon who you ask) It’s not important to know anything but the terminology for now.
Think about weblogs like individual news sources that create headlines and RSS as a way to read the news more easily. Something called a RSS newsreader or aggregator allows you keep up with these headlines more efficiently. It can be a replacement for visiting sites individually or subscribing to email newsletters. Using RSS, the news comes to you. It allows you to use a single tool to read news on the sites you choose.