Sosh, the app that helps you figure out what to do with your free time, has today announced a partnership with OpenTable that will let users book reservations from right within the app. Unlike other OpenTable partnerships, that force you to input information like party number and time, the OpenTable integration on Sosh surfaces all the relevant information with very little user input, so you can simply see what's available and book it. Alongside the partnership announcement, Sosh is also expanding beyond its three current markets of San Francisco, New York and Seattle to deliver service to folks in Washington D.C. and Chicago. This brings Sosh to five total markets in the U.S.. Sosh works like this: Once you sign up using Facebook, Sosh combs all of the cool events, opportunities, dinners, concerts, etc. into a single dashboard, which is then curated by a human before it ever hits the app. That way, all of Sosh's activities are deemed super cool and worth your consideration. Just recently, Sosh launched the Marketplace, which lets vendors sign up to offer activities on the platform. The Marketplace handles everything from marketing to distribution and ticket sales, so that vendors can focus on their craft and their product, and not the marketing or sales side of the business. Since launching about a month ago, Sosh has heard from vendors that using the Sosh Marketplace has doubled their sales from similar events historically, on average. Sosh doesn't offer up specific user numbers, but founder Rishi Mandal did explain that 1 in 6 adult San Franciscans has the app, and 1 in 12 New Yorkers has downloaded the app. These numbers reflect registered users, not MAUs, but Mandal claims that between 60 and 70 percent of users are active on the platform each week. Sosh has received a total of $16.3 million in funding.