This document discusses the importance and benefits of using an intelligent, data-driven approach to retargeting for nonprofit fundraising. It outlines eight truths about how analyzing visitor data can improve retargeting success, such as customizing ads for current donors versus non-donors, testing ad creative and performance, and including mobile and social media. Taking such an approach can maximize fundraising returns and help nonprofits better steward their marketing budgets. The document is from Wiland, a company that provides data and digital advertising solutions to help nonprofits with donor acquisition, retention, and optimization.