Find unlinked children only on some blogs

If you don’t want the Find Unlinked Children (or the Find Some Unlinked Children) post actions to search all the blogs you have access to, try this snippet:

add_action( 'threewp_broadcast_find_unlinked_posts_blogs', 'my_threewp_broadcast_find_unlinked_posts_blogs' );
function threewp_broadcast_find_unlinked_posts_blogs( $action )
{
	// We don't want to search blog ID 12 for unlinked children.
	$action->blogs->forget( 12 );
}