Well,the decision could also have been made along with the fact that they don't have a large user base. I am guessing "Baidu" is still pretty popular there. I wonder if they would have done the same if they had a 60% penetration in the Chinese market.

EDIT:

Why am I being downmodded ? I thought we are supposed to have open discussions here. (I did find the actual google mkt share in the TC blog later, but I was presenting an alternative reason along with the fact that their site was attacked)