Incorporate an optional workflow that would require a stamp of approval from another person before a post goes live. Have the approvals all be in one place aka "posts that need approval" so the person needed can easily view what needs their eyes and they don't have to dig through a calendar or other posts that don't require review. It would be awesome if there were a way to notify this person that didn't include an email for every single post that was marked as "need approval" - in the same way notifications can change from "email me for every mention, task etc" to "email me an update once per day" to avoid inbox clutter. It would also be cool if they could approve the posts from this single email somehow. This workflow would also allow for internal editing, comments etc to create a paper trail of the conversation for the editing process of each post. If a post marked for approval doesn't get approval before scheduled time, it just doesn't go out and sends a notification to the user.