filters for improving user listing SEO stuff

custom.php

/*
 * Make user listing work with the nicename. Tags: user listing, nicename
 */

add_filter('wppb_userlisting_get_user_by_id', create_function('', 'return false;'));

// Filter wp_title for single user listing
function single_user_list_filter_wp_title( $title, $sep ) {
    $userID = wppb_get_query_var('username');

    if ( empty( $userID ) )
        return $title;

    $user_object = new WP_User( $userID );

    $title .= ' - ';
    $title .= $user_object->first_name;
    $title .= ' ';
    $title .= $user_object->last_name;

    return $title;
}
add_filter( 'wp_title', 'single_user_list_filter_wp_title', 99, 2 );

// Filter canonical url so profiles are indexed by google
function single_user_list_canonical_url( $canonical_url, $post ) {

    $userID = wppb_get_query_var('username');

    if ( empty( $userID ) )
        return $canonical_url;

    $canonical_url .= 'user/' . $userID;

    return $canonical_url;
}
add_filter( 'get_canonical_url', 'single_user_list_canonical_url', 99, 2 );

// Filter canonical url so profiles are indexed by google
function single_user_description_meta( ) {

    $userID = wppb_get_query_var('username');

    if ( empty( $userID ) )
        return;

    $user_object = new WP_User( $userID );

    echo '<meta property="og:description" content="'. $user_object->description .'" />';
}
add_action( 'wp_head', 'single_user_description_meta');