I think the Internet is a very fast and convenient way for our to get information. It is very useful because it help us for many purpose, exam:education, communication,entertainment and commerce,...Nowaday, people use more the Internet because the Internet as asource of information such as news, articles, weather forecast,... andas a means of education as online lesson, online school, self study,...and as a source of entertainment such as music, movies, game,...It helpspeople can do online commerce, we can communicate with friends andrelatives by means of e-mail or chatting. However, next to the benefits,the Internet is still many limit such as: can not easily get access to it,onlytime coming and costly but also dangerous because of virus and badprogram, Internet user sometimes have to suffer various richs such as spamor electronic junk mail, and personal information leaking.