How eBay spreads understanding of markets, the importance of reputation, and other good things. from Liberty Cadre.
Poor Economic Intuition, compliments of the crew at Catallarchy (the title of the post says it all).
Big Picture Small Office has an interested post titled Wendy's Queuing Theory which discusses the economics of standing in line
Bad Example gives some useful tips on How to Buy a User Car without getting Screwed.
And last, but far from least, James Hamilton at Econbrowser talks about the general thickness of California energy regulators in Some like it hot.