-snip-
There is no set limit since it's completely random based on what I observed. Some spammers get banned within a couple of days while some others don't ever get banned.
It all comes down to the number of reports filed against them after which they will be given some warnings by the moderators. If the spammer still continues spamming, they eventually get banned.
In that case it would be very helpful if the administration provided an accurate definition of what spam actually is, but that is rather a topic for the Meta board.
In my opinion, posting ellipsis in order to fill up the posting requirement of the campaign qualifies as spam, as I caught them doing.
I was actually implying that they don't have the power to ban the sites themselves(Outside the forum) which is what that particular victim was requesting.
My bad, I misunderstood it.