Displays authors of a collaboration post in place where only one is shown by default. Uses custom fields (key=coauthor;value=user’s username; one per user). Note: If it doesn’t automatically display the co-authors you must manually add if(function_exists(wt_the_coauthors_link)): wt_the_coauthors_link(); endif; into your theme (in PHP <?php ?> brackets, of course).