I have seen the people selling the facebook vouchers here on the dp forums. I want to know how does it work? I mean, do the facebook charge money if somoen clicks on the ad, or they charge by views? For example if i buy $100 voucher, how many times my ad will be displayed? Someone please tell me. Thanks.
They are charged on a "pay per click" basis so every time someone click one of your ads, your credit gets deducted by the charge of the click. Facebook PPC is significantly more expensive than most other PPC channels but if you have a voucher it's worth using it. The actual cost per click will depend on your keyword.