From the New York Times:
For Internet companies doing business in China, a piece of a booming market has not come without compromises.
A series of episodes showing that the companies were bending to the restrictive demands of Beijing — filtering words like “democracy” or “human rights” from Chinese versions of a blog product, or censoring certain concepts from their China-based search engines — has leaked out from users inside China.
And as questions were raised after each new revelation, companies like Yahoo, Google, Microsoft and Cisco Systems invariably offered a variation on a common chorus.