functions.php

<?php

add_filter('user_contactmethods', 'my_user_contactmethods');  
               
function my_user_contactmethods($user_contactmethods){  
  
  $user_contactmethods['twitter'] = 'Twitter Username';  
  $user_contactmethods['facebook'] = 'Facebook URL';  
  $user_contactmethods['google'] = 'Google Profile Link';  
  $user_contactmethods['pinterest'] = 'Printerest Username';  
  $user_contactmethods['linked'] = 'Linkedin Username';  
  
  return $user_contactmethods;  
}