From my article at LinkedIn (because it's fun to pick on the lemmings).
"The only "real" sub fields you will find in business schools are Accounting and MIS/IT as they require 2-4 years of study to get some level of mastery of these subjects. The rest of them, be they marketing, HR, "general business management" or whatever other popcockery b-schools are whipping up and charging you $400 a credit for are bogus. This isn't to say that there isn't value in learning about employment law in HR, or learning some statistical analysis in marketing, but all of these subfields can be summarized in a week long seminar and a pamphlet about 50 pages thick. Not the 4 to 6 years of your youth and 2,000 pages of over-priced, incredibly diluted textbooks they suck out of your veins. And it doesn't matter if it's a "BA" or and "MBA" in business, it's all the same BS."
Remember to buy "Worthless" and make sure either you or somebody you love does not RUIN THEIR LIFE getting an MBA.