// ...
$adapter = App::make('geocoder.adapter';)
$providers = array(
    new \Geocoder\Provider\CloudMadeProvider($adapter, 'api-key'),
    new \Geocoder\Provider\MapQuestProvider($adapter, 'api-key', 'my-locale'),
);

try {
    // maybe the chain provider is better here :)
    Geocoder::registerProviders($providers);
    Geocoder::using('cloudmade');
    $geocode = Geocoder::geocode('10 rue Gambetta, Paris, France');
    var_dump($geocode);
} catch (\Exception $e) {
    echo $e->getMessage();
}
// ...