Nowadays, Social Networking Service is very popular in our daily lives. Whatever at home, in school, in office or anywhere, you can find many people use social networking service by phone or computer to know each other, to share their interests and to build up a good relationship in the worldwide. Social Networking Service is one way for people to connect others such as families, friends, classmates, colleagues or people they don't know on the online community. People can build up their individual web page to share their feelings and connect to the relationship and the social group in the Internet.
There are multiple channels and platforms allowing people to link with each others. In the past, peolpe like to chat with others in some chat rooms, newsgroups or BBS. Facebook, MySpace launched in 2000s, they developed and provided more advanced features such as upload photos, music or movie for the users to share.
However we should concern about the privacy problem. Based on we can ahare our individual profile in the webpage, people are easy to steal or copy our personal information by the illegal way.
