TZ350,
I trust you read the Terms & Conditions applicable to your use of the service.
Particularly clause 11 (their bold) :
We may cancel or suspend your service and your access to the Windows Live ID network at any time without notice and for any reason. Our reasons for cancellation may include that we stop providing the service in your region or that you breach this contract, fail to sign in to the Windows Live ID network during a 90-day period, or don't pay fees that you owe to us or to our agents. If your service is canceled, your right to use the service stops immediately.