This document discusses how several museums and cultural institutions are using Creative Commons licenses to share digital collections online. It provides examples of the Rijksmuseum releasing 150,000 images under CC0, the Brooklyn Museum shifting its licenses from most restrictive to most open over time, and the New York Public Library releasing 20,000 maps as high-resolution downloads under CC0. Benefits mentioned include promoting the institutions, increasing impact and reach, enabling unexpected uses, and leading to new funding models.