How a B-School Networking Problem Became a $20 Million OpportunityBump Technologies co-founder David Lieb went to business school to make contacts. He left to build a new way to share them.

Daydreaming in class is often a habit students come to regret on test day--that is, unless that dream turns into a real company.

That's exactly what happened when David Lieb, CEO and co-founder of Bump Technologies, entered the University of Chicago's MBA program in the fall of 2008.