BTW: If you do not have an iPhone/iPod Touch/iPad, you can borrow a friend's device and download the app to login or signup and you will get the same 50GB. One device can make as many accounts as you throw at it....
That's what I did, thank you.
BTW, they also sent me an email saying I can add my co-workers (who'll also get 50gb), any idea how many 'co-workers' I can have?
Edit, turns out to have to give them a corporate (non-gmail/Yahoo/AOL/Hotmail etc.) email address to invite your 'co-workers'