According to The Register, China has become the No. 2 world spam origin, whilst Americans are spamming less than ever:

"Figures for November from Irish email monitoring firm IE Internet show that although the US is still the world leader with 27 per cent of dodgy emails originating there, this is a huge drop on October's figure of 48 per cent.
The People's Republic of China is now pumping out nearly 26 per cent of all spam filtered by IE Internet - an increase on the previous month's figure of just under 10 per cent.
China is now second in the monthly world rankings of spam-producing countries, followed by Britain (21 per cent), France (15 per cent), India (seven per cent), and Turkey (four per cent). South Korea doesn't figure in the top six global spam machines for the first time in several months."

The one thing I don't get is: how the freak do they pass the 'great wall of china', the firewall which their own government erected to stop its people getting the outside news? AFAIK, pornography is illegal in China, which makes almost 60% of unsolicited e-mail criminal offense. Does anyone know how Chinese spammers send out Vi@gra spam?