I see the little RSS buttons everywhere now. I click on them... and I see what looks like HTML code. I research it further and find there are RSS readers. I've even heard something about iPOD reading RSS feeds. I am assuming this is some standardized coding that allows users with RSS readers to view updated content from websites that have these feeds.
However, I can't seem to find a straight answer on what this is. If it is what I think it is, it sounds like it would be useful to incorporate into information sites where content is updated regularly. I even found a PHP generator for RSS feeds that seems pretty simple to implement. http://usefulinc.com/rss/rsswriter/
Help me understand what RSS/XML is and what potential it holds.