Over half of New York City tenants pay more than one-third of their income on rent and utilities. But they may be paying more than they need to. Some landlords take all sorts of measures to extract more money from tenants, including hiding the fact that their apartment is rent-stabilized, increasing rents illegally, and evicting tenants without the legal right to do so. Here are 10 ways unscrupulous landlords take advantage of tenants, and what you can do about it.