[OT] Is this legal?

[Jon Booth]

Just received some spam from http://www.dotusa.com

Hidden (in my opinion damn hard to find) in their FAQ is 
When and how can I use a .usa domain name? 
The .usa domain names are currently being registered for activation in
2002. They will initially be viewed on the Internet by making a slight
alteration to your web browser.

I suppose thats why their domain is www.dotusa.com and not www.dotusa.usa
What does "registered for activation" mean?