With all the world going mobile, will making reservations at restaurants go the way of the smartphone? 

NoWait thinks so. The Pittsburgh-based startup is beta-testing its new mobile app in Pittsburgh. If all goes as planned, NoWait says it will have seated more than 20 million diners by the end of 2013, easily surpassing the number of people making reservations on OpenTable, an online system that caters to fine dining establishments.

Read more on PopCity.