If Google did something like this, I'm sure it would be all over the media.
Why does everyone think Google's always the bad guy, when Microsoft and Yahoo have worse policies

Did Yahoo! help sent some Chinese to jail?

> Did Yahoo! help sent some Chinese to jail?

There is evidence that they indeed did, though these issues are hard to verify (impossible for me). Example:
http://blogoscoped.com/archive/2006-04-20.html#n16

here's another interesting article from NYT

http://www.nytimes.com/2006/06/15/world/asia/15zhao.html?ex=1308024000&en=f1078417a652745b&ei=5088&partner=rssnyt&emc=rss