public static function canCallAPI()
    {
        $lastCall = Setting::getSetting('twitter', 'last_api_call');

        if ($lastCall == null) {
            return true;
        } else {
            $lastCall = new \DateTime($lastCall);
        }

        $now = new \DateTime();
        $interval = $lastCall->diff($now);

        // Are we at least one minute ago?
        if ($interval->i >= 1) {
            return true;
        } else {
            return false;
        }
    }