From Reuters (link):
Microsoft Corp. said on Tuesday it had no involvement in the case of a Chinese journalist charged with sending subversive e-mails abroad under a pseudonym using a Hotmail account.
The indictment of Li Yuanlong, a 45-year-old reporter, follows accusations that Internet giant Yahoo Inc. provided evidence to Chinese authorities that led to the imprisonment of two journalists.
“Based on an internal review of the information available, we have no involvement in this matter,” said Brian Zhou, an official with Microsoft China’s public relations agency.
Zhou said Microsoft, which owns Hotmail, had no information as to how the Chinese government may have identified Li, who sent the e-mails last year using the pseudonyms “Night Wolf” or “Wolf Howling in the Night.”