Negative rate them:

Added negative ratings to their profiles:

Bitsyncom:
Trust Page https://bitcointalk.org/index.php?action=trust;u=68196
Profile Page https://bitcointalk.org/index.php?action=profile;u=68196

ngzhang:
Trust Page https://bitcointalk.org/index.php?action=trust;u=38132
Profile Page https://bitcointalk.org/index.php?action=profile;u=38132

xiangfu:  
Trust Page https://bitcointalk.org/index.php?action=trust;u=46727  
Profile Page https://bitcointalk.org/index.php?action=profile;u=46727