Hilariousandco has a point... Just report one post and state everything, ex. "there are similar post from this forumite on different threads/boards" that way, we can check the profile of the said person and do what's necessary...
I didn't realize mods actually did that (checking a member's post history), Snip
I always do that, when I suspect that a forumite posts garbage (reported), I always check their profile, and post history, and delete the posts that are almost the same as what was reported...
As far as I know Hilariousandco checks everything, he can't just trace 200+ accounts without investigating at their posts thoroughly... (He is like Robert Langdon)...

If the post is moved, then not all reports are credited with a good report, and quite often if someone hasn't specified something along the lines of "Wrong section, doesn't belong in <section>" then a moderator may think you are reporting it for being in the current section it's been moved too and thus mark it as a bad report.
So in other words, reporting without a valid comment (on the report section) will
always ends up as a bad report?
It's not like that... We always look at the reported posts even if it is a blank report... If it's an obvious spam, then it should be deleted... But if you would report it the way those ICO shills are doing (Reporting posts that they can't answer themselves, or reporting posts that would
open their can of worms), then it is either ignored or labeled as bad, it is almost like reporting without any basis...
MODS don't just label a report "bad" without looking into it...