public function getQueueConfigurationScopes()
    {
        // cache of seen, unique AMQP configurations
        $configurations = array();
        // list of stores to produce unique AMQP configuration
        $uniqueStores = array();
        foreach (Mage::app()->getStores(true) as $store) {
            $amqpConfig = $this->getStoreLevelAmqpConfigurations($store);
            if (!in_array($amqpConfig, $configurations, true)) {
                $configurations[] = $amqpConfig;
                $uniqueStores[] = $store;
            }
        }
        return $uniqueStores;
    }