MyBB

If you have a group set for "usereputationsystem" = 0 (not displayed) and a group set 1 there is a bug. When you have your display group as the 0 you will properly not see the rep in the profile or the postbit. However you can still navigate to the rep by reputation.php?uid=X and if the user is part of another group that has a usereputationsystem=1 then the rep is visible.

I don't believe that's intended. Relevant code in reputation.php is

// Otherwise, show a listing of reputations for the given user.
if(!$mybb->input['action'])
{
    if($user_permissions['usereputationsystem'] != 1)
    {
        error($lang->reputations_disabled_group);
    }

So it's grabbing the $user_permissions but not the display group permission.

I hope this will get fixed eventually. If I recall I may have reported it a long time ago. It's bothersome I have my rep off and yet people can still see it.