The following tip may useful:

How can I prevent someone from sending me Private Messages:

If you do find that you are getting unwanted Private Messages from a user you can block them from sending you Private Messages. To do this go into the Private Messaging system and go to your buddy list. Go to add the user as a buddy, but instead choose the option from the drop down list 'Not to message you', this will prevent this user from sending you anymore Private Messages.

For more FAQ go to this:

http://www.islamicity.com/forum/help.asp

Admin