This is a very simply class to abstract the use of log4net. If log4net is included in the project, you simply use this class as it is. If you remove the log4net.dll from your project, all you have to do is uncomment #define LOG4NET (say //#define LOG4NET) at the top of this file. You should definitely remove log4net when building Web players as it increases the size significantly (around 1 to 2 MB!)