Often today when a Jewish book is banned that leads to a dramatic increase in sales and circulation of the work. This would seem to be the exact opposite of what the Rabbi or Beit Din was trying to accomplish by banning the work. Surely this is known to those who impose the ban, so then why do they bother banning in the first place? They could just as easily express their displeasure with the work without officially banning it.
Does the fact that banning a book today makes it more popular, thereby ostensibly placing a stumbling block before more Jews, mean that Rabbis should no longer ban books?