One of Google's main tenets is to "Not be Evil."
When they launched Google.cn in human rights oblivious China, it was a
censored version heavily biased towards displaying results in sync with the
party line. Criticism was immediate and fierce. Google responded
on the 27th, saying censorship is bad, but not when it's for a good cause. They're right. Google.cn is an important communications inroad. Although censored, the proliferation of any non-government sponsored information is an important inroad for the oppressed
peoples of China.
Encouraging the use of Google enables people to find the information to
help them form independent ideas. From there reform may be one day possible. Less torturing of dissidents --
perhaps because increased access to search results makes hiding human rights
violations harder? -- would be nice. Plus now there's like a gabillion, I mean, a googol, more people to advertise to. Will they be buying democracy?