Here's an idea I had that I thought people on this forum might like.
Anyone who's going to the Beijing Olympics this year should get a USB memory stick and load it up with information that the Chinese government wants to suppress - Democracy, Human Rights, Tibet, that sort of thing. Obviously, nothing that could identify you, for your own safety. Then casually leave it lying around somewhere - a cafe, in your hotel room when you checkout, on your seat in the stadium after an event. If only a small proportion of the people visiting the Olympics do this, and only a small proportion of the sticks of them are found and read, it will still go some way towards undermining the Chinese government's censorship.