Facebook does not allow specific calls to action in the banners on business’s Timelines. Facebook may remove the offending image at its own discretion, with little explanation or recourse. In a recent meeting, one of my marketing peers complained about Facebook’s failure to clarify this policy. I directed him to this infographic at memebase.com. Here’s what it says:
If you’re not paying for it, you’re not the customer. You’re the product being sold.