The Pontiac platform requires every user to fund their seat before you can start buying ad space. Under the ‘Admin’ tab, your initial balance will be displayed as -$100 USD. The first $100 USD that you fund will cover the one-time sign-up fee. Any amount funded over $100 USD can be used for media. All media is purchased on a CPM basis. Select ‘Add Payment Option’ to enter your credit card information, then select ‘Add Credit’ to fund the account.