1. A method of generating a log for a multi-user application, said multi-user application being used by a plurality of users, said method comprising: maintaining level data indicating association of each of said plurality of users with a respective log level of a plurality of log levels, wherein said level data associates a first log level with a first user and a second log level with a second user, wherein said first user and said second user are contained in said plurality of users, and wherein said first log level and said second log level are contained in said plurality of log levels; receiving a first request from said first user and a second request from said second user, wherein said first request and said second request are for a same operation, and are received when said level data associates said first log level with said first user and said second log level with said second user; executing a software code constituting said multi-user application for both of said first user and said second user in a server system such that said first request and said second request for said same operation are processed by said multi-user application executing in said server system; determining whether any specific log level is indicated as a part of said first request and said second request, wherein said determining determines that said second request indicates a third log level, and said first request does not indicate any specific log level; and including, by said multi-user application, in said log a first amount of information based on said first log level when said software code is executed in said server system for processing said first request for said same operation received from said first user, and a second amount of information based on said third log level when said software code is executed in said server system for processing said second request for said same operation received from said second user.