http://support.chess.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=709
"If you would like to report a repeat offender or somebody that we should watch carefully, then please submit an Abuse Report."
http://support.chess.com/index.php?_m=tickets&_a=submit
[TAKE IT TO A REPORT (SEE BELOW) -- Moderator]