what's the disadvantage and advantage of internet?

what's the disadvantage and advantage of internet?

what's the disadvantage and advantage of internet?参考：
A great of attention is being paid to today to the so-called advantage of the Internet when computers have found their ways into all walks of life.
The time and the place of learning knowledge change with the arrival of computers.Electronic communications bring knowledge to people at evryage wherevere they are---at home,on the job,by a hospital bed,in the car,as well as in a traditional classroom.Therefore people will be able to say,"I'll learn where and when I want".
The use of the new educational way is putting computers in the classroom and we called "Computers in the Classroom.
The new way brings not only students' career prospects lighter but also radical educational reform.Students can choose the way of their instruction,either from a teacher or a computer.Desk-top computers will enable students to work at theirown speeds and on different subjects at the same time when students carry a personal computer instead of a book bag and go in a single classroom.At that time teachers will disappear some and classroom will become less school saves more money and the focus of the work is promoting high quality education.Soit should be observed that school and student are helped by the use of the Internet.