Out of the 4, I think Zynga has the best shot at succeeding because they have the most control over their destiny. LinkedIn has to deal with the Facebook jugge

Out of the 4, I think Zynga has the best shot at succeeding because they have the most control over their destiny. LinkedIn has to deal with the Facebook juggernaut. Pandora is at the mercy of record label contracts. Groupon has a ton of competition and needs a massive sales force.