“It’s an environment where it’s easy to talk to new people and you have some shared common background,” said Jennifer Wilde Anderson, the founder of Ivy Plus. “You can say: ‘Hi James, you went to Harvard? My brother went there.’ Or, ‘You went to Dartmouth? I remember when we used to sail there and the awesome Dartmouth regatta parties.’ ”
Full article here. It's as awesome as the quote above would lead you to believe.