Airbnb co-founder and CEO Brian Chesky at the Fortune Global Forum Wednesday, Nov. 4, 2015, in San Francisco. San Francisco voters rejected two ballot measures prompted by the city's housing crisis. Voters rejected a proposal to restrict Airbnb and other short-term platforms and a ballot measure to freeze construction of luxury housing in the Mission District, one of San Francisco's most coveted neighborhoods. Airbnb, by far the world's largest home-share platform, spent more than $8 million to defeat the measure with a blitz of advertising. (AP Photo/Eric Risberg)
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