only one account is permitted.
multyaccount

If you report it here:
http://support.chess.com/index.php?_m=tickets&_a=submit&step=1&departmentid=5&subject=Abuse%20Report
Then something will be done about it. Having more than one account breaks the site rules.
is there posible on this site(chess.com) to have more then 1 account and play with all off them at the same time?