Everyone hears stories about companies that start in garages and grow into multi-million dollar companies. This story, however, started in a San Francisco condo so it's unlikely a garage was involved. In 2007, two guys – Joe and Brian – realized they couldn't pay their rent and needed a little extra cash. They decided to offer affordable accommodations to people who were coming to San Francisco to attend a design conference. Their idea was simple. Conference attendees could crash for a night on an air mattress in the condo's spare room and would be served breakfast the next morning. They bought three air mattresses, created a simple website (airbedandbreakfast.com) and spread the word. Three people showed up seeking accommodations and Joe and Brian realized that they had created more than a way to raise rent money. Today, Airbnb is an online marketplace that connects people who want to rent out their dwelling with people who need temporary dwelling space. This seemingly simple concept gives people the opportunity of a lifetime. Rather than stay in an expensive and characterless hotel, Airbnb travelers stay in historical homes, villas, castles in cities with names out of The Arabian Nights and in apartments located on breathtaking beaches. Airbnb has listings for residences in over 34,000 cities and 190 countries. Each listing contains price, photos, reviews and a way to contact the host. The only thing Airbnb users have to decide is where they want to go next.