What’s the most economical living situation? Subletting your rent-controlled apartment and never having to pay rent. Renters who are allowed to sublease their low-rent apartments can profit from the high cost of housing in the San Francisco area. Some earn extra sums of money, but the woman profiled in the article says she only rents out at her cost (leaving herself rent free). And the best part is that she uses the freedom this odd combination of capitalism + government control gives her to do good for the world as an environmental educator. I like that.