This document discusses how libraries can use social tools to promote user participation and collaboration. It explores how popular social tools like Facebook, Flickr, and Twitter have millions of users and questions whether libraries should integrate similar features. The document considers challenges around balancing control with openness and flexibility. It raises questions about whether libraries are ready to be less prescriptive and integrate user suggestions. The goal of social library tools would be to speak to users in their own language and involve them in creating services, but ensuring this is done properly poses challenges around standards, taxonomy, and control versus freedom.