WordPress at a glance
filter is not described

user_(name)_label filter-hook . WP 2.9.0

Filters a user contactmethod label.

The dynamic portion of the filter hook, $name, refers to each of the keys in the contactmethods array.

Usage

add_filter( 'user_(name)_label', 'filter_function_name_7408' );
function filter_function_name_7408( $desc ){
	// filter...

	return $desc;
}
$desc(string)
The translatable label for the contactmethod.

Where the hook is called

In file: /wp-admin/user-edit.php
user_(name)_label
wp-admin/user-edit.php 505
echo apply_filters( "user_{$name}_label", $desc );

Where the hook is used (in WP core)

Does not used.