This document summarizes a panel discussion on attribution and affiliate marketing. The panelists discussed the evolution of attribution models and how attribution has affected how affiliates are valued. Various attribution model types were presented including position-based, linear, time decay, and algorithmic models. Panelists also answered questions about why attribution should be incorporated, the most effective models for affiliates, case studies, how attribution may affect affiliates, common mistakes, and changes they have observed in recent years regarding attribution and affiliate marketing.