The current issue of Christianity Today (April 2008) has an article "How to Save the Christian Bookstore" which suggests that Christians make bookstores more friendly and less obviously religious. Some bookstores (mainly the independently-owned stores, which are in decline) might be able to pull this off. If the focus is truly on using the bookstore as a forum forum for recruiting and indoctrination, this might happen.
But in reality Christian bookstores are primarily in it to make a buck.
I often visit the mall in Joplin, Missouri, which includes a religious bookstore. I've often beem surprised by the staff of the bookstore. Invariably they are very tightly-wound creepy characters, exactly the kind of people you see on The X-Files as running cults in rural towns and practicing cannibalism, child molesting, and other such rituals.
From the expressions on their faces and the twisted body-language it is clear that they are very, very unhappy people who have been trapped in dead-end jobs. Since the owners of the Christian bookstore are probably Christians, we can also be fairly sure that these people are working for minimum wage with no benefits ("they can always rely on God for help") and no hope to escape their taskmasters.
How could you make this place "friendly" when the workers are so miserable and unhappy?