Really Simple Syndication
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What is RSS?
RSS - known both as Really Simple Syndication and Rich Site Summary - is an XML-based standard for delivering updates to web-based content. Using RSS, any website can push its most recent content to users who sign up for the service.
How do I use RSS?
You can install a RSS reader that displays RSS feeds from web sites of your choosing. The RSS reader serves as an information portal, polling websites to retrieve the lastest news and information.

There are a number of free RSS readers available. After installing the reader, subscribe to the following URL: http://www.nysedata.com/rss/. Your RSS reader will inform you any time that news or announcements are added to www.nysedata.com.
RSS References:
http://www.rss-specifications.com/
http://www.webreference.com/authoring/languages/xml/rss/intro/
http://www.xml.com/pub/a/2002/12/18/dive-into-xml.html