What is an RSS Feed?

If you glanced at my previous two posts and mused, 'What the heck is an RSS feed and what does this geek eat for breakfast anyway?', you're not alone. 

Well, I had Grapenuts and Microsoft milk for breakfast and I'll defer to Chris Sells for an explanation of what an RSS feed is.  (good stuff)

“An RSS feed is a thing of pure beauty. If you've ever been to a web site with an orange XML or RSS button, clicking it will yield a page that looks something like this... [read on].