How to add an Admin Notice to WordPress Publishing Area to give you and your authors reminders or links.
Add the following to your functions.php file in your theme folder.
function my_admin_notice(){
echo '
<div class="updated">
<h2>Get <b>Article Ideas</b> Right <a href="somelinedotcom" target="_blank">Here * Click me *</a>. Thanks</h2>
</div>
';
}
add_action('admin_notices', 'my_admin_notice');