Affiliate marketing can be worthwhile if managed correctly. Looking past last click attribution, sales journeys are complex with affiliates contributing to incremental and intercepted sales. Not all affiliates or sales are the same - different affiliate types like content versus vouchers operate differently and influence basket size, new versus existing customers, and time to purchase. To maximize effectiveness, marketers should analyze affiliate contributions, consider true customer lifetime value, and tailor approaches, offers, and incentives for each affiliate type.