The difference is I don’t want to manage users. The password will be given to anybody. For instance, grandma could give the password to a friend so he/she can view the blog because I put pictures on the blog.
The thing is I want to password-protect the site to avoir strangers to access the site. I don’t care that a friend of a friend have the password to see the site, but I don’t want any joe somebody that doesn’t have a far relation with me or my familly to access it.