Okay something is going down at Wallop, the social networking start-up that emerged out of Microsoft research efforts. Last week, inventor Sean Uberoi Kelly left the company. Today, another executive is gone. Scott Arpajian, vice president of products, is leaving the company, for professional and personal reasons. He announced his departure sent out to Wallop colleagues earlier today. Wallop CEO Karl Jacob told us earlier that company is about to come out of beta soon. These exits are raising some questions in our mind, and require further mucking around.