Modify User Profile to include an active checkbox

gistfile1.aw

<?php 

//Extra Author Profile Meta
add_action( 'show_user_profile', 'my_show_extra_profile_fields' );
add_action( 'edit_user_profile', 'my_show_extra_profile_fields' );
function my_show_extra_profile_fields( $user ) { ?>
	<h3>Is this an active author?</h3>
	<table class="form-table">
		<tr>
			<td>
				<?php $agree = get_the_author_meta( 'active_author', $user->ID ); ?>
				<label for="active_author">Active Author <input value="true" name="active_author" id="active_author" <?php if ($agree == 'true' ) { ?>checked="checked"<?php }?> type="checkbox" /></label>
				<?php //var_export($agree); ?>
			</td>
		</tr>
	</table>
<?php }
add_action( 'personal_options_update', 'my_save_extra_profile_fields' );
add_action( 'edit_user_profile_update', 'my_save_extra_profile_fields' );
function my_save_extra_profile_fields( $user_id ) {
	if ( !current_user_can( 'edit_user', $user_id ) )
		return false;
	/* Copy and paste this line for additional fields. Make sure to change 'twitter' to the field ID. */
	update_usermeta( $user_id, 'active_author', $_POST['active_author'] );
}

//Meet the authors Page
add_action('genesis_after_post_title', 'biz_authors_list');
function biz_authors_list() {
	if(is_page('meet-the-authors')) {
		//echo'<h2 class="pagetitle">Our Authors</h2>';
		$blogusers = get_users_of_blog();
		if ($blogusers) {
			$au = array();
			foreach ($blogusers as $bloguser) {
				$user = get_userdata($bloguser->user_id);
				//$active = get_user_meta ( $user, 'active_author', $single );
				$post_count = count_user_posts($user->ID);
				$au[] = array(
					'user_id' => $user->ID , 
					'nicename' => $user->user_nicename, 
					'display_name' => $user->display_name, 
					'email' => $user->user_email,
					'bio' => $user->description,
					'post_count' => $post_count,
					'active' => $user->active_author
				);
			}
		}
		//then loop through the authors
		echo'<div>';
		foreach ($au as $aut){
			if ( $aut['active'] == 'true' ) {
				if ($aut['post_count'] > 0) {
					echo '<div class="author-box author-'.$aut['user_id'].'">';
					echo '<a href="'.get_bloginfo('url').'/author/' . $aut['nicename'] . '">'.get_avatar($aut['email'], '70').'';
					echo '<h2>'.$aut['display_name'] .'</a></h2>';
					echo '<div><p>'.$aut['bio'].'</p></div>';
					echo'</div>';
				}
			}
		}
		echo '</div>';
	}
}
?>