The Yahoo + Yelp Partnership
Yahoo and Yelp have an active Channel Partnership according to finance.yahoo.com. There are 136 companies in the Yahoo partner ecosystem and 79 companies in the Yelp partner ecosystem.
12 companies exist in both ecosystems, representing 9% of the Yahoo parther ecosystem and 15% of the Yelp partner ecosystem. Singular and Braintree are the largest companies that exist in both ecosystems.