Social Network

This term has been so popular lately especially since friendster came up in about 2000. what is social network ? based on my intepertation, social network is a term that is used to connect each other in order to do social interaction through internet. through social network, i can find my long-time-no-see friend, my ex girl friend, my new friend, my classmate, even may father and my mother. ofcourse they have to have registered account. talking about the social network site, there are a lot of sites which provide this such as Facebook, Plurk, Twitter, Quora, even now Yahoo and Gmail has Facebook-style-social-network. well this is not surpsring for me, because people always seeking through anything that will make the access become easier. anyway. there are severeal bad effect of using social network,,, what are they ?? i'll tell you later !! :p