I don't have an immediate need for all that extra Gobbler space thrown in with the X3 upgrade. Can I save it for later? Is there a time limit for redemption?

Might be a question for gobbler support.

You need to copy your code and paste it at the Gobbler website...open an account now.  once done with registration, you'll have your own control panel kind of thing.  i believe the bonus space is good for 6 months.  Upgrading prices are reasonable if you're gonna use the service.
 
Dub
 

Thanks, guys. I'll contact their support.