True! That really sucks. I was thinking something like a browser could allow audio in response to, say, a push notification (akin to how they allow popups to b

True! That really sucks. I was thinking something like a browser could allow audio in response to, say, a push notification (akin to how they allow popups to be created after user click events) but that'd be easily gameable for the situation you describe. There's no way a browser can distinguish between a legitimate message from a human and robospam. Thanks for the clarification.