- Age32, 32, 30
In the five years since they launched it from a San Francisco loft, Airbnb has single-handedly legitimized couch-surfing as a hotel alternative–and provided a not-insignificant revenue stream for entrepreneurial homeowners. It’s also become one of the most watched companies in the tech world, valued at $2.5 billion. Now Chesky is CEO, Gebbia chief product officer, and Blecharczyk its CTO. Although Airbnb’s reach already spans more than 33,000 cities and 192 countries, its biggest asset could be a growing trove of travel data about users.