Also, what do notifications for "so-and-so has posted" look like? I don't use them, but if they include the link, then if so-and-so didn't mean the post to be public (or visible to that group or whatever) and hastily takes it private, that could leave the people who got the notification more information than they'd otherwise have. In some cases, the drama llama might get to dance all over the place from that one.