IN MY OPINION, TO AVOID SUCH PROBLEM SOME MONITORING ACTIVITY SHOULD BE IMPLEMENTED THROUGH SOFT WARE. SOME SPECIFIC WORDS SHOULD NOT APPEAR ON THE SITE ETC. ALSO FOR SENSITIVE SUBJECTS SOME HUMAN MONITORING SYSTEM ALSO SHOULD BE IMPLEMENTED.IF ANY ABUSE ALERT HAS RECEIVED THAT CAN BE REMOVED FROM SITE LIKE REDIFF. SO MANY PEOPLE ARE BENEFITTED BY THIS SITE AND IT IS GOOD FOR EXCHANGE OF IDEA'S. HENCE THE SITE SHOULD NOT BE BANNED.