Kudos to san Dai.  Wht you have done now should have been done long long ago. Its all because of these kind of users, we lost so many great users . I just appreciate your invovlement to banned these people.. and yeah one more note, to all of those who advoate about expressing their so called 'rights' to express their opinion freely, i suggest you to be a 'human' first and then come here to talk about your rights..