If you feel his posts are spam you should report some of his posts that you find off-topic, AFAIK there are lots people who post on-topic but spammy posts, for ex- chartbuddy, Amph but no action has been taken against them, lastly his posts dont seem that frequent , at most I guess 3 days ban, but I don't think any mod will give him a ban ATM.
And if you have problems with spammy posts, well welcome to the forum man.
Also lastly, scam accusation is not a place for posting this kind of things, maybe meta would be better, and mods notice it there as well.