The Internet technology has helped desgin a large number of web sites to

facilitate social relations among people around the world. These are known as

social networking services or social networks or social media. At present, Face-

book is the most popular social media site. LinkedIn, X (formerly Twitter), Google+ etc.

are Other frequently used social services. Social network services are web-based

and hence, provide ways for the users to interact through the Internet. These

services make it possible to connect people across the borders and thus have

made the users feel that they reall.v live in a global village.

Why are social networks expanding so fast? The answer is simple. Most of the

social services are cost-free. You can make use ofthem free, paying a very little

to your Internet service provider. Secondly. you can make your personal profile

public before the entire online community. It is Ilke presenting yourself before

the entire world. You can also look into Other people's profile if you are

interested. It is simple and easy. Thirdly. social networks allow users to upload

pictures, multimedia contents and modify the profile. Some services like

Facebook allow users to update their profiles. Fourthly, networks allow users to

post blog entries. User profiles have a section dedicated to comments from

friends and other users. Finally, there are privacy protection measures too. A user

himself or herself decides over the number of visitors/viewers, and what

information should be shared with others.