I see you spent alot of time getting all them threads listed.
You know what the OP's are doing and you even say within your report. So the best thing you and can others can do is ignore them. Let the threads fall off page 50. You post you give them what they are craving and thats attention.
I totally get what you are saying and are feeling about some suggestions but I can't just lock them because you say they are spam. Some maybe but others are borderline and can't be locked.