If your new service is of true benefit, it will be used.
Are you arguing for this change? Whatever the argument is seems to be based on misinterpreting 'private' as 'known by no-one else'. Exactly the same argument could apply to e-mail: it's not private in the sense that no-one else sees it, just hidden from the majority of the world; presumably, when you sent it, you were advertising what it said to the recipient.