As I said, the line that should not be crossed is from engagement to collaboration. There can be honest debate about simply doing business in or with a country or company that's doing something wrong. It's actively helping them do wrong that's clearly over the line.

I don't believe adsense publishers are participating in Google's facilitation of Chinese censorship. If they were I would indeed withdraw from the program and encourage others to do so. And Google is still a pretty decent company on the whole -- though it's made a serious mistake here.