Social media are defined as applications and websites that allow users to share content, usually of their own making. Social media users include individuals and organizations across a broad range of social strata. Key social work organizations, such as the National Association of Social Workers and the Association of Social Work Boards, have begun noting the proliferation of social media usage in education and practice and have begun developing guidelines to govern their use. The American Academy of Social Work and Social Welfare, in their Grand Challenges of Social Work initiative, highlighted social media as an important area of growth for research and education. Despite the field’s nascent enthusiasm, practical and ethical concerns persist. This article defines social media; discusses its usage in social work practice, research, and education; and discusses the ethical and practical considerations in each domain.