This document discusses how mobile phones can be used for activism and advocacy, providing examples and challenges. It outlines three main ways mobiles have been used: 1) to organize and coordinate protests through text messaging, as seen in the Philippines and Spain; 2) to document human rights abuses through camera phone videos, as in Egypt, Tibet, and Morocco; and 3) to bridge mobile and internet activism through microblogging tools like Twitter, as in Egypt. Key issues to consider include network structure and security, costs, and effective dissemination methods.