15 Facebook Marketplace Scams - The Krazy Coupon Lady 8. Fake Rentals. This is one of the riskier scams since it can involve a lot of money. Sellers will list housing or apartment rentals that they don't own or have nothing to do with, all to scam a seller out of money. Do your due diligence to ensure you know who owns the property and what they're allowed to do with it.