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What is meant By Web feed/RSS?

Web feed means or does -  giving updated information or content.
For Example :
if you want that this X-news paper should give me breaking news on my taskbar.then you have to subscribe web-feed of that X-news papers.After subscription, your task bar shows you breaking news that are published.Subscription means you telling them that 'please update me if any breaking news arises'.
 Web feed used different format for transferring  frequently updated content .Well Know format is RSS (Rich Site Summary).RSS is Extension of XML format.
For Example:
After subscription,data will transferred from X-news paper to your system.There is specific data format so that both end system will understand for communication.
Important aim behind this technology is that there should be the free flow of information across internet and anyone should have access.
If any one have complaints or suggestion , please contact me on oomph.fortuity@hotmail.com

Sources:
http://en.wikipedia.org/wiki/RSS
http://en.wikipedia.org/wiki/Web_feed

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