I have the same problem on my forum. They create much work for me, but even worse, some posted picture adds with hard core porn!! These people are just evil. "For the love of money is the root of all evil." (1 Timothy 6:10)
I operate a website for our church where people from young children to old ladies read posts and these Spams are most inappropriate...
If anyone has any suggestion how to prevent them from getting through, input would be much appreciated.