News agencies generally prepare articles that can be used by other news organizations with little or no modification, and then sell them to other news organizations. They provide these articles in bulk electronically through wire services (originally they used telegraphy; today they frequently use the Internet). Corporations, individuals, analysts and intelligence agencies often also subscribe to news agencies as sources of information.
Whether the news agency is a government entity or a commercial firm, dependence on official sources often results in systematic biases in the content of its news coverage. (See "Reporting a New Delhi Bias? A Content Analysis of AP Wire Stories on the Conflicts in Sri Lanka and Kashmir," by John Hickman and Sarah Bartlett in Jouvert: A Journal of Postcolonial Studies, Volume 6, Number 3, (Spring 2002) at http://social.chass.ncsu.edu/jouvert/v613/sri.htm ).
US news agencies include:
Commercial PR services include: