Effective marketing should be able to survive even my scrutiny As an affiliate, and future product publisher, proof (that is unequivocal)  is something in which I place a great amount of emphasis. It allows me to recommend a product or service with reduced risk of damaging my own reputation I want to be sure my readers will be delivered the product or service promised, thus giving them the potential to achieve any results claimed Reputation is important – often proof also acts as a signifi