WSJ's Rolfe Winkler explains the fact that Zynga product line exists as virtual games could give some reason to worry in advance of the company's expected IPO because the average life of a virtual product is declining.
WSJ's Rolfe Winkler explains the fact that Zynga product line exists as virtual games could give some reason to worry in advance of the company's expected IPO because the average life of a virtual product is declining.