A widget is an item that can be embedded in a Web page. In this case, it's a picture of Sam and Dean with a little Flash movie in the middle of it. Which you can now see on my page because I figured it out! Yay, me!

I was just pasting the widget code into the HTML text box on the posting page. What you have to do is click on 'embed media' at the top of the text box and paste the widget code into the resulting pop up window.