The short of it is that there is nothing you can do about it. It's a growing problem. I think this is certainly going to be an issue during the Olympics. It's not just Adult content, its basically, data containing 'un-desirable words/ information' will get blocked. So just have content with the word 'Falun Gong' or 'or Hu Jintao sucks' and you could get blocked .

All programmers should embed comments like:-

// Falun Gong Rocks
// HU Jintao Sucks

in their scripts , so eventually, China will have no outbound traffic whatsover and spamming will probably drop by 80%