This online reservation platform has found success in connecting social groups, charities, and restaurants.For every startup that achieves meteoric success, there's another destined for mediocrity. At first, that second path seemed to apply to Houston-based GroupRaise, an online reservation platform with a philanthropic hook: The company catered to large groups of 20 or more who want to hold an event at a local in restaurant, which in exchange for the large reservation agreed to give away a percentage of the check to a nonprofit chosen by the group.Read Full Story