Page and post auto links

You don’t have to create a post to hold your data, you can use the Settings API

for example you put in your functions.php:

$copyright = get_option('my_them_copyright');
if (!isset($copyright)){
    $copyright="Design by: <a href="https://wordpress.stackexchange.com/questions/11576/domain.com">ME</a>";
    update_option('my_them_copyright',$copyright);
}

and then whenever you want to call it you use get_option() like this:

$copyright = get_option('my_them_copyright');
echo $copyright;

Update

like i commented any post/page will get a permalink automatically but what you can do is register your own post type

<?php
add_action('init', 'register_generic_data');
function register_generic_data()   
{
  $labels = array(
    'name' => _x('Generic Data', 'post type general name'),
    'singular_name' => _x('Generic Data', 'post type singular name'),
    'add_new' => _x('Add New', 'Generic Data'),
    'add_new_item' => __('Add New Generic Data'),
    'edit_item' => __('Edit Generic Data'),
    'new_item' => __('New Generic Data'),
    'view_item' => __('View Generic Data'),
    'search_items' => __('Search Generic Data'),
    'not_found' =>  __('No Generic Data found'),
    'not_found_in_trash' => __('No Generic Data found in Trash'), 
    'parent_item_colon' => ''
  );
  $args = array(
    'labels' => $labels,
    'public' => true,
    'publicly_queryable' => false,
    'exclude_from_search' => true,
    'show_in_nav_menus' => false,
    'show_ui' => true, 
    'query_var' => false,
    'rewrite' => false,
    'capability_type' => 'post',
    'hierarchical' => true,
    'menu_position' => 20,
    'supports' => array('title','editor','author','thumbnail','excerpt','trackbacks','custom-fields','comments','revisions','page-attributes'),
    'taxonomies' => array('category','post_tag')
  ); 
  register_post_type('gen_data',$args);
};?>

Now if you take a close look at this part:

    'publicly_queryable' => false,
    'exclude_from_search' => true,
    'show_in_nav_menus' => false,
    'query_var' => false,
    'rewrite' => false,
    'show_ui' => true, 

you can see that we set the post type to have a ui and to show in the admin menu
but other then that its “none public”.

so you can create your portfolio posts using this post type or any other “generic data types” that need post capabilities.