He increases the forum's post count no matter what the quality of those posts is.
People should create self-moderated threads more often, especially in boards with high amounts of spam such as P&S, Bitcoin Discussion, B&H, Gambling...
In my experience, the mods are rather quick to delete off-topic spam when I report it. I am not an active reporter but I do report things from time to time when I believe they shouldn't be there, and it gets handled.   

How does a report of yours look like for a post of his that should be deleted? What do you write there? Do the same type of reports you make get handled in other forum boards?

Share a few of those links here...