On its website, Mendeley (http://www.mendeley.com/) refers to itself as a “Reference Manager and Academic Social Network”. In Wikipedia, it is categorized as a “Reference Management Tool”. Similar products, such as Papers and Colwiz, call themselves “Personal Research Libraries” or “Research Management, Collaboration and Productivity in one place”. These varying methods of classifying this new type of tool demonstrate the confusion about what Mendeley is and what it can do for the user. The answer is quite a lot.