/* BEGIN Custom User Contact Info */ 
function extra_contact_info($contactmethods) { 
	unset($contactmethods['aim']); 
	unset($contactmethods['yim']); 
	unset($contactmethods['jabber']); 
	$contactmethods['facebook'] = 'Facebook'; 
	$contactmethods['twitter'] = 'Twitter'; 
	$contactmethods['linkedin'] = 'LinkedIn'; 
	return $contactmethods; 
} 
add_filter('user_contactmethods', 'extra_contact_info'); 
/* END Custom User Contact Info */