Your essay answers the question of how and what technology affects our social lives, but not "how far."  The first sentence or two should make a statement related to the question; your thesis statement.

wijaya.theresia

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One modern technology which has transformed our the social life is online social networking, such as Facebook, Twitter, Friendster, and MySpace. These online social networking connects ( subject-verb agreement) people from around the world. People come from different continents, races, cultures and religions. People are able to meet old friends and meet new friends. There are no more boundaries for them to network with many people. Moreover, they do not have any difficulties to share any kinds of information with to each other. By using the mouse (what about the monitor, keyboard, and webcam?) on their right hand, people can always catch up and chat with their ex-colleagues, family, and friends who are in a different location and time zone (plural might be better here). Furthermore, the high speed internet home broadband is able to support a video conferencing and streaming. It is a tool used to share any kinds of information through the air media (air media is TV and radio - there is internet over satellite connections, but most high speed internet connections go by cable). We do not need to step out from our house to meet with our colleagues. Certainly, people would (why do you use the conditional here?) have more time managing their personal life and work life. Nevertheless online technology for social networking, it is still lacking of the human touch. ”