If you check 'Public', your stats will be accessible to anyone from the following URL :

http://fr.web-stat.com/stats/userID.htm (où userID est l'identifiant de votre compte).

If you check 'Private', your stats will be password-protected and you will only be able to access them by clicking the 'Check Stats' link on the Web-Stat menu bar and entering your user ID and password.