function my_widgets_init() {
    if ( function_exists('register_sidebar') ){
        $topLevel = get_pages(array(
            'sort_column'   => 'menu_order',
            'hierarchical'  => 0,
            'parent'        => 0,
            'post_type'     => 'page',
            'post_status'   => 'publish'
        ));

        foreach($topLevel as $page)
        {
            //make alphaunermic
            $sidebarID = preg_replace("/[^a-z0-9_\s-]/", "", strtolower($page->post_title));

            //Clean multiple dashes or whitespaces
            $sidebarID = preg_replace("/[\s-]+/", " ", strtolower($page->post_title));

            //Convert whitespaces and underscore to dash
            $sidebarID = preg_replace("/[\s_]/", "-", strtolower($page->post_title));

            register_sidebar(array(
              'name' => $page->post_title,
              'id'   => 'sidebar-'.$sidebarID,
              'description'   => '',
              'before_widget' => '<div class="widget">',
              'after_widget'  => '</div>',
              'before_title'  => '<h2>',
              'after_title'   => '</h2>'
            ));
        }
    }
}
add_action('widgets_init', 'my_widgets_init');