Proper web log analysis tool configuration and report interpretation requires a bit of technical and business knowledge. AWStats support resources include documentation and user community forums.
The on-demand CGI program has been the object of security exploits, as is the case of many CGI programs. Organizations wishing to provide public access to their Web analytics reports should consider generating static HTML reports. The on-demand facility can still be used by restricting its use to internal users. Precautions should be taken against referrer spam. Referrer spam filtering functionality was added in version 6.5.
Analog offers a wealth of reporting options for a technical audience. It does not support the concept of a visitor, usually desired for business analysis. Development and support appears to have stopped in 2004 (with last version 6.0).