Most of us are marketing online for one reason.... the moola. A popular method of collecting that cold hard cash from your clients is via a Payment Gateway and that is today's topic for #whatiswednesday. A payment gateway is the electronic version of a credit card processor. It processes the payments that are placed on a website and either accepts or declines them. When a payment is accepted it is placed into a merchant account. The merchant account will hold onto your cash for a few days and then deposit it into your bank account.