In the upper right corner of the admin panel there is a HELP menu. This menu, in my opinion, no one uses. Moreover, it is not necessary for those, who just publish articles. I propose to disable this menu for them and leave it only for administrators.

To disable the menu, add code to your theme's function.php file:

function hide_help() {
    if(!is_admin()){
    echo '';
    }
}
add_action('admin_head', 'hide_help');

For WordPress version later 3.1 use code:

function hide_help() {
    if (!current_user_can('administrator')){
    echo '';
    }
} 
add_action('admin_head', 'hide_help');

You can also remove the button “display options” which is nearby, just need to add code:

function remove_screen_options(){
    return false;
}
add_filter('screen_options_show_screen', 'remove_screen_options');