Cost of Revenues (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 USD ($)		Dec. 31, 2012 CNY		Dec. 31, 2011 CNY		Dec. 31, 2010 CNY
Cost of Revenues [Abstract]
Revenue sharing fees	$ 42,298		263,518		285,960		151,732
Content and operational costs	36,585		227,934		171,707		99,838
Bandwidth costs	10,870		67,721		37,462		19,552
Sales taxes and surcharges	11,577		72,126		59,547		28,301
Total	$ 101,330	[1]	631,299	[1]	554,676	[1]	299,423	[1]

[1] Revenues, cost of revenues and operating expenses include transactions with related parties as follows: 2010 2011 2012 2012 RMB RMB RMB US$ Net advertising revenues 4,824 26,201 35,438 5,688 Paid service revenues 294,027 445,096 429,125 68,879 Cost of revenues (38,800 ) (73,833 ) (67,481 ) (10,831 ) Sales and marketing expenses (438 ) (663 ) (916 ) (147 ) General and administrative expenses (617 ) (1,139 ) (646 ) (104 ) Technology and product development expenses (314 ) (533 ) - -