From Xinhua via China Daily (link):
China’s online dating market is expected to reach 653 million yuan (about 81 million U.S. dollars ) by 2008, with an annual growth rate of 60 percent, according to a recent iResearch report.
The report values the online dating market at 37 million yuan (some 4.5 million dollars) for 2004 and 91 million yuan (11.2 million dollars) for 2005 and predicts it will grow to 653 million yuan, 4.8 percent of the entire dating market in China.
In comparison, the US market was 520 million dollars for 2005, and the European market was 110 million dollars, both expanding at double-digit rates, the report said.
See also The Internet Dating Conference, just held in Beijing May 18-19, 2006, and its press release; “Speed dating gains popularity in China” by China Daily via Voice of Strait (link)