The internet has rapidly developed and become part of our daily life . It's a very fast and convenient way to get information . people use the internet for many purposes : education , communication , entertainment and commerce . the internet helps people communicate with friends and relatives by means of email or chatting. However , the internet has limitations . It is time - consuming and costly . It is also dangerous because of viruses and bad programs . besides , the internet users sometimes have to suffer various risks such as spam or electronic junk mail and personal information leaking . so , while enjoying surfing , be alert . 1)what do people use the internet for? 2)Does the internet have any limitations? 3) why is the internet dangerous?