Log files provide users and administrators with important feedback on which documents are popular. Usually, a stastics summary is generated before removing the log files and hept on-line for a longer period of time. Providing usage charts. Both remote users and local information-providers may be interested in stastics and usage charts, which can be automatically generated and mapped into the server's document space. Setting up seachable repostitories.
Information usually has to be prepared before it can be made accessible.
Running automatic consistency checkers. Documents can contain hypertext links to other information and it is important to verify the correctness of these links. Setting up dynamic enhancements. Handling forms and interfacing to database systems and existing information services usually requires server extensions.