Google:
http://www.Google.com The Essentials of Google Search
Doing a search on Google is easy. Simply type one or more search terms (the words or phrase that best describe the information you want to find) into the search box and hit the 'Enter' key or click on the Google Search button.
In response, Google produces a results page: a list of web pages related to your search terms, with the most relevant page appearing first, then the next, and so on.
More:
http://www.google.com/help/basics.htmlFor example:
Results 1 - 10 of about 1,180,000,000 for rss. (0.16 seconds)
http://www.google.com/search?&q=rssAnd now, RSS:
What Is RSS
by Mark Pilgrim
December 18, 2002
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.
More:
http://www.xml.com/pub/a/2002/12/18/dive-into-xml.html