He has performed this role since the company’s inception after Yammer was spun-out of Geni Inc. (a Prior to his roles at Geni and Yammer, David was the National Manager, Business Development & Business Affairs at LoopNet, Inc. Karrer graduated from Loyola Marymount University (Valedictorian), then attended USC as a Tau Beta Pi fellow, one of the top 30 engineers in the nation, and received a M.S. Just a quick note that I'll be moderating a Technology Council Event : Social Networking as a Business Strategy May 19, 2009 - Culver City Social networking media are used on a daily basis to grow businesses and expand career opportunities.