I personally think that the how and why of WoW's economy is worth a deep look, and it appears there are a lot of people who agree with me--even some academics. It might even be worth just as much as any other book-learnin'.
At least, that's the basis of David Friedman's World of Warcraft economics course proposal. Friedman is an academic economist from San Jose, CA who's assembled this article as a think-tank for what a WoW economics course would entail if you had to fill it with a semester's worth of content. There's a lot of neat stuff in here, talking about relative prices of ore based on character level and rarity of ore and supply/demand, but he also asks for your input as to possible course material, which I'm sure you could gladly provide in the comments section of his page.
Good idea with sound academic basis, or another in the long list of high falootin' academia's attempts to justify playing WoW on the government's dime? WE REPORT. YOU DECIDE.