Q: When I click the AddFreeStats button on the website pages, the statistics are public. Have I done something wrong? Or is it only because I am the owner of the account that it's visible for me, but not for anybody else?
A: That should be the reason--YOU can see your stats from your button link since it'll recognize the cookie on your computer, or it'll ask you to log in if the cookie has expired, but others should only get sent to the "top by traffic" page.
and can't see your stats without your password. Note: 'Protect your stats by a password' option must be setted on YES (Edit your account).