Rysman, Marc. “The economics of two-sided markets." Journal of economic perspectives 23.3 (2009): 125-43. [aeaweb];[PDF][**]
==first para.==
At a local Best Buy, a child places a new Sony PlayStation 3 on the cashier’ scounter while the parents dig out their Visa card. The gaming system and the payment card may appear to have little connection other than this purchase. However, these two items share an important characteristic that is generating a series of economic insights and has important implications for strategic decision making and economic policy making. Both video game systems and payment cards are examples of two-sided markets.
行為 & 經濟實驗文獻注 (備忘) by 楊奕農 