News broadcasting is the broadcasting of various news events and other information via television or radio. The content is usually either produced locally in a newsroom, or by a broadcast network. It may also include such additional material as sports coverage, weather forecasts, traffic reports, commentary and other material that the broadcaster feels is relevant to their audience. A social network is a social structure made of individuals (or organizations) called "nodes," which are tied (connected) by one or more specific types of interdependency, such as friendship, kinship, financial exchange, dislike, relationships of beliefs, knowledge. Although people have loosely used the word “social network” for past 50 years, the impact of social networking improved with the advent of internet. Social networking is now the happening thing in this “information era”.
2.BRIEF HISTORY OF NEWS
In its infancy, news gathering was primitive by today's standards. Printed news had to be phoned in to a newsroom or brought there by a reporter, where it was typed and either transmitted over wire services or edited and manually set in type along with other news stories for a specific edition.  Most large cities had morning and afternoon newspapers . As the media evolved and news outlets increased to the point of near over-saturation, afternoon newspapers were shut down except for relatively few. Morning newspapers have been gradually losing circulation, according to reports advanced by the papers themselves . Commonly, news content should contain the "Five Ws" (who, what, when, where, why, and also how) of an event. There should be no questions remaining. Cable news channels such as BBC News, MSNBC, and CNN, are able to take advantage of a story, sacrificing other, decidedly less important stories, and giving as much detail about breaking news as possible. Today, the term "breaking news" has become trite as broadcast and cable news services use live satellite technology to bring current events into consumers' homes live as they happen. Events, that used to take hours or days to become news of common knowledge in towns or in nations, are now fed instantaneously to consumers via radio, television, mobile phone, and the Internet.
3.COMPITITION AND CHALLENGES FACED BY NEWS CHANNELS
Broadcasting news is a very big challenge today. With lot of news channels being around, it is very important for the news channels to not only deliver news on time with quality but also to engage people into their programs, so that they can create a loyal customer base. The competition faced by the news channels is not only because of other news channels but it is also from other sources of news and entertainment. News channels however should not lose focus on their core values and competencies to have their loyal customers intact, but they should also think of innovative ways to increase their customer base.
In this age of information technology, news travels faster on phones and internet. News channels should try to use these technological advancements for their benefit. Creating web portals give good advantage to news channels; social networking will make the use of internet much better. Engaging people, collecting the trends of the programs that are being watched, attracting more advertisements, creating prime time programs that make people interested are the basic things to be focused on, apart from improving the news network, reporting techniques, reporters and most of all being unbiased.
A survey in 2008 by Pew Research Center shows an increase in the internet usage
Internet Overtakes Newspapers As News Outlet Biggest Stories of 2008: Economy Tops Campaign 
Internet Overtakes Newspapers As News Outlet Biggest Stories of 2008: Economy Tops Campaign  A recent survey by CNN “Survey: More Americans get news from Internet than newspapers or radio”  on March 1st 2010 says •Six out of...