Jeff said:and Canada doesn't even have that big of a population... i'm surprised russia isn't in the top 10
I would try not to believe in those GDP figures. The statistics for Russia will never be accurate - god knows how much of the income is not declared for tax evasion purpose.
For internet market, i would rather look at statistics like internet usage and broadband penetration. These provide better insight into future growth potential:
TOP COUNTRIES AS OF 2004 Q4 WITH
THE HIGHEST INTERNET DSL BROADBAND SUBSCRIBERS
http://www.internetworldstats.com/dsl.htm