What is addiction? What harm can addiction to internet do too college students?

Addiction,,according to aadictionary,,means that development of habitual inclination..No one knows what causes a person to be addicted to the Internet,,but there are sever all factors that have been proposed as contributing to Internet addiction.. With the development of computer technology,,there is a growing popularity of Internet surfing on college campus..Many students are addicted to Internet .They spend much time on computer games,,chatting with friends,,watching movies or shopping online..