That's the carrot. Here's the stick. A blogger called Tan Zuoren started asking questions about why so many schools collapsed during the Sichuan earthquake. A lot of Communist Party buildings survived. Shoddy building standards? Backhanders? He was jailed for 5 years yesterday. Don't ask questions, comrade.
A friend suggested, in the spirit of Swift, that the Chinese should outsource their astroturfing to the American public. The US could then pay back its foreign debt, 50 cents at a time...