The most formidable weapon against errors of every kind is Reason - Thomas Paine
The organisation said Yahoo provided account holder information on Shi Tao after he summarised a Communist Party directive to a foreign source.
He was sentenced to 10 years for providing state secrets to foreign invitations by using his email account.
Amnesty has provided a form letter on its web site, here, addressed to Yahoo co-founders Jerry Yang and David Filo. ยต