I'd like to create a special "announcement" category for my WordPress-based website. Posts made to this category should never show up anywhere on my site -- instead, they'll be passed to FeedBurner and sent by email to subscribers to my announcement list.
The point of this category would be solely to make big announcements, perhaps two or three times each year. I don't want to allow people to subscribe to my announcements as an RSS feed, since my announcements will be so few and far between.
So how do I create an Announcement category for Feedburner's benefit, while forbidding posts from this category to show up on my site?