Yahoo Inc. may have helped Chinese police to identify an Internet writer [Jiang Lijun] who was subsequently jailed for four years for subversion in the third such case, an advocacy group for journalists said on Wednesday... "Little by little we are piecing together the evidence for what we have long suspected, that Yahoo! is implicated in the arrest of most of the people that we have been defending," [Reporters Without Borders] said. "We hope this Internet giant will not...hide behind its local partner, Alibaba, to justify its behaviour. Whatever contract it has with this partner, the e-mail service is marketed as Yahoo!," it said... The company has defended itself in the past, saying it had to abide by local laws. [also refers to Google, Microsoft, MSN Spaces (China) (joint venture Microsoft & Shanghai Alliance Entertainment)]