Those kind of posts are easily covered by rules 1 - zero/low value, pointless, or uninteresting. I've reported thousands of posts like that (literally) with the simple comment "Low value spam", and my 100% accuracy suggests that the mods don't often disagree with my assessment of these posts. The problem is I could spend all day reporting such posts, and sometimes did, and by the time I woke up the next day there would be twice as many new spam posts to work through. Reporting the same user 100+ times and seeing no action taken against them is a pretty strong indication that you are wasting your time playing a never ending game of whac-a-mole.