Getting sick of over-sterilized hotel rooms whenever you travel? Crash at a real person’s crib instead. Airbnb has fostered a trusted community of users who have put up their available pads for rent. You can browse by city or set up parameters -- check in and check out dates, number of guests, shared or private room, price range, etc. -- for more specific results. An emergency “I need a place tonight!” button serves up your best options right away.