Zynga's (ZNGA) IPO landed with a 'thud', Barron's reports. There is concern about slowing user growth, declining margins and Zynga's heavy dependence on Facebook, where it generates 94% of its revenue. Barron's Plugged In columnist Mark Veverka believes, investors will be left to decide whether CEO Ted Pincus can lead as well as he can build.
America has no tolerance for wealthy people griping about their financial woes. But they have concerns too.

