The questions are related to revenue recognition. I attached the case for your reference.

Zynga: Revenue Recognition Review the excerpts from the 2011 Zynga annual report and the Morgan Stanley exhibit and briefly answer the following questions. This assignment should not exceed 1 page. Zynga Inc. (ZNGA) is the world's leading provider of social game services with 240 million monthly users in over 175 countries. Zynga's leading games include CityVille, Zynga Poker, FarmVille, CastleVille, FrontierVille, Mafia Wars, Words with Friends and Draw Something. Facebook is the primary distributor, marketer and payment platform for the company's games, although the games are available on other social networks and through mobile applications. Zynga went public in December 2011 and is headquartered in San Francisco, CA. 1) Does Zynga charge its customers to play the company's games? How does Zynga earn revenue? 2) In your own words, explain how Zynga records revenue from the sale of virtual goods? 3a) Do you think Zynga's method for accounting for virtual goods is appropriate? Why or why not? 3b) What other information would you like Zynga to provide in order to better assess whether the accounting treatment for virtual goods is appropriate 4a) Zynga notes that a change in the estimated average playing period resulted in an increase in revenue of $53.9 million in 2011 and an offsetting reduction in revenue in 2012. What must have happened to the average playing period (i.e., did it increase or decrease)? What does that imply about the nature of Zynga's business? 4b) What net income would Zynga have reported in 2011 had the company not made this change? Zynga Inc. Consolidated Statements of Operations (in thousands) Year Ended December 31, 2011 2010 2009 Revenue $ Net income (loss) $ 176,052 149,519 114,165 32,251 471,987 56,707 51,029 42,266 24,243 174,245 125,472 (52,778) 1,680 (2,206) 1,826 Interest income Other income (expense), net (Provision for) / benefit from income taxes $ 121,467 (405,616) Income (loss) from operations $ 597,459 330,043 727,018 234,199 254,456 1,545,716 Costs and expenses: Cost of revenue Research and development Sales and marketing General and administrative Total costs and expenses 1,140,100 1,222 365 (36,464 177 (209) (12) (404,316) $ 90,595 $ (52,822) Zynga Inc. Notes to Consolidated Financial Statements Revenue Recognition We derive revenue from the sale of virtual goods associated with our online games and the sale of advertising within our games. Online Game We operate our games as live services that allow players to play for free. Within these games, players can purchase virtual currency to obtain virtual goods to enhance their gameplaying experience. We recognize revenue when the service has been provided to the player and the collection of our fees is reasonably assured. For purposes of determining when the service has been provided to the player, we have determined that an implied obligation exists to the paying player to continue displaying the purchased virtual goods within the online game over their estimated life or until they are consumed. The proceeds from the sale of virtual goods are initially recorded in deferred revenue. We categorize our virtual goods as either consumable or durable: Consumable virtual goods, such as energy in CityVille, represent goods that can be consumed by a specific player action. Common characteristics of consumable goods include virtual goods that are no longer displayed on the player's game board after a short period of time, do not provide the player any continuing benefit following consumption, or enable a player to perform in-game action immediately. For the sale of consumable virtual goods, we recognize revenue as the goods are consumed, which approximates one month. Durable virtual goods, such as tractors in Farmville, represent virtual goods that are accessible to the player over an extended period of time. We recognize revenue from the sale of durable virtual goods ratably over the estimated average playing period of paying players for the applicable game, which represents our best estimate of the estimated average life of durable virtual goods. Future usage patterns may differ from historical usage patterns and therefore the estimated average playing periods may change in the future. We assess the estimated average playing period for paying players and the estimated average life of our virtual goods quarterly. Cumulative changes in estimated average playing period for paying players in 2011 resulted in an increase in revenue of $53.9 million and will result in an offsetting reduction of 2012 revenue in the same amount. Advertising We have contractual relationships with agencies, advertising brokers and certain advertisers for advertisements within our games. We recognize advertising revenue for branded virtual goods and sponsorships, engagement advertisements and offers, mobile advertisements and other advertisements as advertisements are delivered to customers. Zynga Inc. Notes to Consolidated Financial Statements We report our advertising revenue net of amounts due to advertising agencies and brokers because we are not the primary obligor in our arrangements, we do not set the pricing, and we do not establish or maintain the relationship with the advertiser. Revenue by type The following table presents the components of revenue (in thousands): Online game Advertising Total revenue $ $ Year Ended December 31, 2011 2010 2009 1,065,648 $ 574,632 $ 85,748 74,452 22,827 35,719 1,140,100 $ 597,459 $ 121,467 MORGAN STANLEY RESEARCH January 25, 2012 Zynga Inc. MORGAN STANLEY RESEARCH Zynga Inc. January 25, 2012 Zynga: Company Overview - Virtual Goods Consumable Goods - One-time use items, revenue recognized within current period (Energy in Empires & Allies) (Resources in CastleVille) (Power-ups in Indiana Jones Adv. World) Durable Goods - Revenue recognized over expected life of game (Tractors in FarmVille) Source: Company filing, Company website Source: Investext. Reprinted for educational purposes. (Fountain of Youth in CityVille) (Weapons in Mafia Wars 2)