The niche targeting wont matter either. It will help im sure, but not much. What the problem is, is that millions of these fake accounts like THOUSANDS of pages. If you are looking for Females in the united states under 25 that like Uggs, heels, puppys. You may find a mix of real and fake accounts. Now imagine you went more niche. The females under 25 have to like "face wash, skincare, and beauty products". Not many humans will "LIKE" these pages with an obvious marketing purpose. Some will. But you will most find bots that have randomly liked everything on facebook. MAking marketing to niches less effective. instead of having a small amount of active users, you have a small amount of active users in a pool of worthless accounts.