- If all the posts are filtered, you get a blank page. It would be better to
	filter, then paginate.
- Select All and Deselect All buttons on the Options | Category Access and
	user management pages. (Suggested by David Katz <davidk@slic.com>)
- An option to allow all visitors to view all pages regardless of category but
	to limit what categories particular users can edit. (Suggested by David Katz
	<davidk@slic.com>)
- Filter inaccessible categories from the "write post" admin page. This
	requires a hook that Wordpress doesn't have. See
	http://trac.wordpress.org/ticket/2623. (Suggested by Paul Magnowski
	<p.magnowski@plum.com.pl>)
- Provide a way to set default visibility for a category for all users. "Bulk
	update". (Suggested by Paul Magnowski <p.magnowski@plum.com.pl>)
- Modify RSS feeds to support showing of restricted posts. (Dave Wonnacott
	<dave.wonnacott@traworld.com>.)
- Modify comment RSS feed to hide comments on restricted posts. (Super Ann
  <tech@superann.com>.)
- > > ad: If a person selects categories that they do not have access to
	> > when editing or writing a post, these categories are removed. If no
	> > categories remain, the post is put into the uncategorized category and
	> > not published.
	> 
	> i let people select any category they want when writing a post. ie, if
	> it's YOUR post, you can see it regardless of category access (just like
	> admin can since version 0.5).  in post_should_be_hidden i added at the
	> beginning

	> global $current_user
	> 
	> if ($current_user->id == $post->post_author)
	>   return false;

	Are you sure this doesn't still modify the categories as described above?

	It seems to me we want a configuration option choice like:

		_ Prevent users from posting into categories for which they do not have
		access. (Remove restricted categories from the post, and save the post 
		as a draft if there are no categories remaining.)

		_ Allow users to post into categories for which they do not have access.
		(Users will always be able to see their own posts.)

	What do you think?
