You can include a page/post content into a different page/post. For example, if you have a privacy disclaimer may be useful to load that content in a different context. This could be very useful when:
- Anyone can edit the page/post without edit the included content
- The loaded content works as standalone page/post as well
The best way to include a page/post content is:
$postID = get_page_by_title( "Privacy" )->ID;
$post = get_post( &$postID );
echo apply_filters( "the_content", $post->post_content );