This document discusses the maturity of nonprofit social media measurement practices. It presents a framework that nonprofits can follow from "crawl-walk-run-fly" as they progress in their social media measurement. The "crawl" stage involves piloting measurement of one program, while "fly" involves measuring multiple channels, developing key performance indicators (KPIs), and using data for continuous improvement. The document provides examples of nonprofits at different stages and outlines best practices such as linking social media to outcomes, developing a data-informed culture, and embracing failure.