Public relations are the planned and sustained effort to establish and maintain beneficial relationships between an organization and its publics. It involves fact-finding, planning, communication, and research and evaluation. PR professionals use both external media like newspapers, radio, television and internal media like house journals, bulletins boards and printed literature to communicate with stakeholders. They also employ tools like press conferences, press releases, press tours, exhibitions, photographs and advertising. Community relations, government relations and word-of-mouth are also important aspects of public relations.