When Zynga launched FarmVille last June, the company thought 200,000 daily active users in the first two months would be a success. Within eight weeks, the game had surpassed Zynga’s hits of the previous two years. For the first 26 weeks FarmVille added 1 million net new users per week; it currently has 70 million active users a month. The story of Mark William’s last two years has been one of try