gistfile1.aw

<?php

class og_statistics_handler_filter_posts_count extends views_handler_filter_boolean_operator {
  function option_definition() {
    $options = parent::option_definition();
    $options['value'] = array('default' => 1);
    return $options;
  }
 function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);
    $form['value']['#type'] = 'radios';
    $form['value']['#title'] = t('Filter on group posts');
    $form['value']['#options'] = array(1 => t('Has posts'), 0 => t('Has no posts'));
  }

  function query() {
  	// @TODO: insert magical query stuff.
  	// add_where? perhaps. 
}