Iba and Greenspan would go on to attend the Y Combinator program , where they created AppJet and Etherpad .
It was there that he teamed up with David Greenspan to win the annual Battlecode programming competition in 2003 .
Iba and David Greenspan would go on to attend the Y Combinator program , where they created AppJet and Etherpad .
It was there that he teamed up with David Greenspan to win the annual Battlecode programming competition in 2003 .