Experts in the United Kingdom who study various types of mental catatonia have found that more and more people will experience varying degrees of discomfort after using the Internet  According to a sample survey of 10,000 people who frequently go online, they admit that they feel irritable and annoyed after going online  The number has reached one-third; and 44% of Internet fans under the age of 20 admit to feeling irritable and nervous after surfing the Internet
Due to the dramatic increase in the number of Internet users and congested channels, if you want to visit a busy website, sometimes you have to wait a long time
 Psychologists believe that there indeed exist some kind of Internet mania