"Upon examination of data from my publishing clients, we found that Facebook typically limits the exposure of posts to only 5-10% of the total audience. In other words, 90 – 95% of fans never see the posts and updates they requested to receive. That seems pretty lop-sided. Yet, that’s not the worst part.
When my clients create a post to openly market a new book, or even give away a free resource, Facebook limits the exposure even more. Only 2-5% of fans see the posts! That’s right, 95-98% of fans never see the information. Again, these are people who chose to “like” a publisher’s page and willingly agreed to receive new posts.
Pay to Play
If you want to reach the majority of fans on your Facebook page, you’re left with only one option — pay money."
http://www.bookbusinessmag.com/post/facebook-holding-readers-hostage-dont-pay-ransom
When my clients create a post to openly market a new book, or even give away a free resource, Facebook limits the exposure even more. Only 2-5% of fans see the posts! That’s right, 95-98% of fans never see the information. Again, these are people who chose to “like” a publisher’s page and willingly agreed to receive new posts.
Pay to Play
If you want to reach the majority of fans on your Facebook page, you’re left with only one option — pay money."
http://www.bookbusinessmag.com/post/facebook-holding-readers-hostage-dont-pay-ransom