AirBnB.Com, Uber.Com: If you own a house or car, should you be free to do what you want with it? If your plans for your personal property include making money, then you may find out the hard way that, no, you can’t do as you wish. That’s the harsh lesson being learned by many Americans as they participate in the new, burgeoning freelance services industries. Consider Raleigh, North Carolina resident Gregg Stebben. He and his wife Jodi are registered as service providers with AirBnB.Com, the new online venture that matches travelers in search of lodging with private homes, extra bedrooms...