If you've been using WordPress.com for very long, you've likely run into some variation of the grand "com v. org" debate. And it's possible that any explanation you received raised more questions than it answered. So, what's the deal with the two WordPresses? What are the advantages of one over the other?
To explain this clearly, it helps if we go into a bit of history, so gather round children, and I shall tell you the tale of WordPress.