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IT'S NOT often that a major multinational corporation sacrifices profits and the possibility of substantial growth for a human rights principle. So Google deserves praise for its groundbreaking decision to move its China-based search engine from the mainland to Hong Kong and end its censorship of searches. The shift does not mean that Chinese will be able to learn about Tiananmen or Tibet through Google searches; Beijing's firewall has already begun screening such content from Google.cn. But the company itself will no longer be engaged in suppressing Internet freedom on behalf of an authoritarian government. In drawing that line, Google sets an example that other U.S. firms should follow --...