"Partnerships would be easier if we had more social connections, " says Matt Maloney, co-founder of GrubHub.

WSJ: A Start-Up Ecosystem Forms in Chicago

GrubHub CEO Matt Maloney will become CEO, while Seamless CEO Jonathan Zabusky will serve as president, the companies said in a joint statement.

WSJ: Seamless and GrubHub to combine, no terms revealed

Matt Maloney is co-founder and CEO of GrubHub Inc.

WSJ: Lessons GrubHub's CEO Learned Using Freemium