While I would agree that a company shouldn't be ashamed for people (including employees) to know what the salaries of their employees are, in my experience it's not great for the employees to know too much about such matters. There's a reason why the policy of non-disclosure exists for most companies. Accept that there will always be someone who makes more than you do, even more than they should; it's up to the employee to decide if their compensation is fair, and if it isn't, to seek a raise or a new position.