Capitalism at its finest. This tenant found themselves staring down the unwanted scenario of an apartment complex trying to turn their units into condos, after luring folks in with low rent. So, as the story goes, the tenant basically sets up a marketplace for the use of the complex's laundry machines, and ends up commandeering some of the apartment's income. Beautiful work, really.
Check out another revenge story with the time that a landlord wouldn't pay for electricity during winter, so they ended up having to pay thousands.