bp_get_send_public_message_link()

	function bp_get_send_public_message_link() {

		// No link if not logged in, not looking at someone else's profile.
		if ( ! is_user_logged_in() || ! bp_is_user() || bp_is_my_profile() ) {
			$retval = '';
		} else {
			$args   = array( 'r' => bp_get_displayed_user_mentionname() );
			$url    = add_query_arg( $args, bp_get_activity_directory_permalink() );
			$retval = wp_nonce_url( $url );
		}

		/**
		 * Filters the public message link for the displayed user.
		 *
		 * @since BuddyPress 1.2.0
		 *
		 * @param string $retval The URL for the public message link.
		 */
		return apply_filters( 'bp_get_send_public_message_link', $retval );
	}