According to various posters on the
official Xbox forums, people taking advantage of the free one-month subscription to Xbox Live Gold will run into some
irritating problems when the service expires. Despite buying a 12-month gamecard and upgrading the account, when the
trial period was over one poster found his account reverted to Silver status; others have found all
gamertags on their 360 changed to Silver when just one expired.
Some were advised to try deleting their
gamertags and then re-recovering them (losing all saved data in the process) to no avail, so we're waiting for word
from Xbox on this issue. The best way to handle upgrading from a one-month trial to a full account seems to be to wait
for the trial to expire, and then
apply the 3 or 12 month subscription.