But before 1998, there were only a handful of blog sites on the Internet. With the increase of the number of blogs, the blog content written on various blog websites is also mixed. Windows network operating system is designed with various log files, such as application log, security log, scheduler service log, FTP log, WWW log, DNS, network log and so on. These vary according to the services your system offers. Weblogs are the most popular type, and many people write them. Such as "teaching log", "team log" and "work log". Finally, like early blogs, it is divided into QQ log, space log, 5 1 log and so on. These are all kinds of online logs, so QQ logs are produced. QQ logs are mainly articles written by Tencent QQ users in QQ space. The main users are students who mainly make friends and internet addicts.