RSS allows you to see when sites from all over the internet have added new content. You can get the latest headlines and articles (or even audio files, photographs or video) in one place, as soon as they are published, without having to remember to visit each site every day and by showing you the very latest information that you are interested in.
In general, the first thing you need is something called a news reader. This is a piece of software that checks RSS feeds and lets you read any new articles that have been added to them. There are many different versions, some of which are accessed using a browser, and some of which are downloadable applications. Browser-based news readers let you catch up with your RSS feed subscriptions from any computer, whereas downloadable applications let you store them on your main computer, in the same way that you either download your e-mail using Outlook, or keep it on a web-based service like Hotmail.
Once you have chosen a news reader, all you have to do is to decide what content you want to receive in your news reader, by finding and subscribing to the relevant RSS feeds.
You can subscribe to a feed in various ways, including by dragging the URL of the RSS feed into your news reader or by cutting and pasting the same URL into a new feed in your news reader.
Some browsers, including Firefox, Opera and Safari, automatically check for RSS feeds for you when you visit a website, and display an icon when they find one. This can make subscribing to RSS feeds much easier.
If you have Adobe Acrobat® 7.0 Professional, you can use it to view RSS feeds:
In Acrobat, choose Comments > Tracker, and then choose Services > Subscribe in the Tracker window.
In the next dialog box, enter the URL to an RSS feed, and click OK
From then on Acrobat will keep track of the RSS feed and update it as it changes
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Adobe Acrobat 8 Professional