Do blog users have access to the Users page – are they able to see the status (contributor, author, etc) of other users? Can all users see all of the info on the stats page and, if so, can this be limited by the administrator?
Actually, exactly what pages are non-administrative users able to access?
Important: Please be careful of the roles you give users on your blog. If you add a user as an administrator, you are granting full ownership rights to him/her. This means that if he/she deletes the blog and/or its content, there is no wrongdoing. For this reason, we recommend having only one administrator per blog. Also note that all user roles provide access to a site’s stats.http://en.support.wordpress.com/user-roles/