/**
* Navigate to the website of an advert
*
* @param int $id The id of the advert
* @return Redirect
*/
public function url($id)
{
$advert = Advert::published()->findOrFail($id);
$advert->access_counter++;
$advert->save();
return Redirect::to($advert->url);
// Go to advert website
}
