Yoni Greenstein is a matchmaker. Six years ago, he realized companies that entertain clients at sporting events often have tickets that go unused. And there are children - some with illnesses, some without the means - who could really use the kind of thrill you can only get from seeing your favorite team live. So Greenstein started making inquiries and hooking the two sides up. Now, what began as a small effort by one guy from the Orthodox Jewish community in Monsey, New York, has grown to three cities, including Chicago, with three more on the way soon. Sharing Seats’ Yoni Greenstein explains the program.(Flickr/loop_oh)