Vellos,
maybe we can first start to define 'advertisement'?
Topics like 'barca' or 'fissoan verminators guild' are all advertising there realm.
My topic just makes it perfectly clear that it is my actual intention to advertise.
I understand that in the real world commercialism caused exactly what you discribed.
However this is bm, which atracts like minded people and it is a game.
It doesn't work like you say so and even if it did become a hype, people who will despise it will always naturally attract each other in the realm that doesn't advertise.