Core CharacteristicsWhat these observations imply is that there are five basic characteristics that differentiate a social network from a regular website. Those characteristics are as follows.1. User-based:Before social networks like Facebook or MySpace became the norm, websites were based on content that was updated by one user and read by Internet visitors. The flow of information was in a single direction, and the direction of future updates was determined by the webmaster, or writer. Online social networks, on the other hand, are built and directed by users themselves. Without the users, the network would be an empty space filled with empty forums, applications, and chat rooms. Users populate the network with conversations and content. The direction of that content is determined byanyonewho takes part in the discussion. This is what make social networks so much more exciting and dynamic for Internet users.2. Interactive:Another characteristic of modern social networks is the fact that they are so interactive. This means that a social network is not just a collection of chatrooms and forums anymore. Websites likeFacebookare filled with network-based gaming applications, where you can play poker together or challenge a friend to a chess tournament. These social networks are quickly becoming a pastime that more people are choosing over television - because it's more than just entertainment, it's a way to connect and have fun with friends.3. Community-driven:Social networks are built and thrive from community concepts. This means that just like communities or social groups around the world are founded on the fact that members hold common beliefs or hobbies, social networks are based on the same principle. Within most modern online social networks today, you'll find sub-communities of people who share commonalities, such as alumni of a particular high school, or an animal welfare group. Not only can you discover new friends within these interest based communities, but you can also reconnect with old friends that you lost contact with many years ago.4. Relationships:Unlike the websites of the past, social networks thrive on relationships. The more relationships that you have within the network, the more established you are toward the center of that network. Like the concept most pyramid schemes are focused on, within online social networks, the concept really works in a powerful way. When you have just 20 contacts and you publish a note or an update on that page, that content proliferates out across a network of contacts and sub-contacts that's much larger than you may realize.5. Emotion over content:Another unique characteristic of social networks is the emotional factor. While websites of the past were focused primarily on providing information to a visitor, the social network actually provides users with emotional security and a sense that no matter what happens, their friends are within easy reach. Whether suffering through divorce, break-up or any other family crisis, people are finding that the ability to jump online and communicate directly with a circle of friends provides a great deal of support in an otherwise unmanageable situation.

Pros1. Social networking sites increase voter participation.Facebook users reported they are more likely to vote if they see on social networking sites that their friends did.[25]During the Nov. 2010 elections, Facebook users who visit the site more than once a day were 2.5 times more likely to attend a political rally or meeting, 57% more likely to persuade someone about a vote, and 43% more likely to say they will vote.[26]During the 2012 presidential election, 22% of registered voters posted about how they voted on Facebook or Twitter, 30% were encouraged to vote by posts on social media, and 20% encouraged others to vote via social networking sites.[27]2. Advertising 3. Social media allows for quick, easy dissemination of public health and safety information from reputable sources4. Social networking sites help people who are socially isolated or shy connect with other people5. Social networking sites spread information faster than any other media6. Everyone can express freely and easily their views/ opinion of various issues.