|Rank||Country||% of Wrold Total||# of Internet Users|
|Top 10 Total||62.00||726,569,285|
Statistics are collected for 2007. With the recent reform and increase of Internet users in China, it would not be a surprise if China had already surpassed USA as of 2009.
I also question the position of Japan and South Korea, as they are more connected to the Internet than most other countries in the world. The low ranking may be the result of their populations compared to China and USA.
Source: Internet World Stats