Happens on every forum, its just more noticeable here because the forum is new and doesnt have thousands of threads to hide in.
Just report it using the Triangle Caution button on the lower left corner of the post and it will be removed.
I'm going to try a few new things just to see what I can get working. It is only one a day now, but, for example, STH's main blog gets a few thousand a month but still a few get through. Thanks for reporting guys.