Many of you already know that I am the economics guide for About.com, where I post both articles about basic economics and blog posts about economics in the news and other fun stuff. Some of you may have even noticed that I link to the latest of said articles and blog posts in the sidebar to the left. That said, the sidebar isn’t the most obvious thing in the world (and isn’t even visible to RSS subscribers), so I’m going to start posting the pieces as blog posts here to augment the direct content. (I’ve also created an “About” category to keep things organized.) So, without further ado, I present Fun with Purchasing-Power Parity: The Big Mac Index.