I've posted about how to find your book's ideal audience before, so I won't wander down the same trail. (janefriedman.com)
Are there dayparts with ideal audiences that your competitors haven't tapped yet, for example? (netaff.com)
Or it's possible that she's just Michael Haneke's ideal audience member, the one spectator involved in the whole sordid affair who has the courtesy to stop watching the horrors before her eyes. (filmfreakcentral.net)