It would be really helpful if support for Category permission were added in future versions.
Im implementing WP as a tool for our organization to share news and ideas, and to draw public interest.
It would be nice, and I think encourage greater participation by our staff, if it could additionally be used for discussion of company politics and more sensitive matters that we dont want the public to view.
One idea would be to give the Author the option of setting (or possibly requesting) what groups are able to see their post.
This way a lower lever user would have the ability to post something that could only be viewed by administrators, not his colleagues.
..Just a thought.
Some sort of simple Category based permission would be great though.
Thanks! really enjoying your project.