The directory and review site Yelp shares global crowdsourced user data on restaurants across cities (such as Phoenix, Madison, and Edinburgh) in its Dataset Challenge for participating researchers to build tools and provide research on urban trends and behavior. The Yelp dataset includes reviews, locations, restaurant names, and photographs. Yelp provides a cash prize to participants who use the data in a way that demonstrates technical depth, rigor, and relevance. Through the Dataset Challenge website, Yelp also provides information on previous challenge winners, compelling uses of the data, and areas for future research.