Yes these postings are a pain, and I try to remove them as soon as I see them, or they are brought to my attention. In the past, where email addresses have been listed with these postings, it has been know for said email addresses to be "bombed" with as much rubbish as possible in order to give them "the message". Unfortunately they still appear every now and again, so if you want to help to keep them off the site, you too can become a "bomber".