What is RSS?

RSS stands for Really Simple Syndication and is a web content 
format that allows you to subscribe to websites. An RSS file 
is different from traditional web content because it simply 
contains information about recent updates; there are no colors, 
images or formatting. By using an RSS reader application you 
can automatically have this content brought to your desktop 
by subscribing to an RSS feed.

What is RSS for?

Quite simply, RSS files are files that allow other people, 
websites and programs to display information from other websites 
in a simple and automatic format. Since RSS is a standardized 
format it is easy for multiple RSS feeds from multiple sites 
to display information in other places. These places could be 
to your desktop via a RSS reader program or another site.

learn more from wikipedia

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