The discussion has been ongoing, but seriously, it looks like they are just boxing out anything they can think of should they need them. Most of those will never be used, they would be getting them to prevent somebody else from getting them. I don't for example ever see them using americanairlinesusairways.com as a url for the public to use, it's way too long, and looks like

Americian
Airline
Sue
US
Airways

Sort of like when Pen Island bought their name.