I gave up reporting this type of abuse a while ago. Sometimes I noticed that between making the report and it being actioned, pages of further crap had been posted.
On some threads where I think there is a risk of a very questionable scheme's bumping service actually succeeding in boosting credibility, I periodically post summaries of the spam and a warning about it, but rarely go to the lengths that JollyGood has on the basis that

Never wrestle with a pig.
You get covered in shit and the pig enjoys it.


This.

If the senior management of the forum doesn't consider the thousands upon thousands of spam posts being made (solely to distort visitors' perception of the popularity of usually dubious schemes) to be a threat to the forum's credibility, then this conclusion seems inevitable