I could see pay.barclaycard or apply.barclaycard. shop.bloomingdales and fashion.bloomingdales would work as well. donate.cancerresearch would work, but I'll grant you the money could be better spent.
Basically what these new TLDs are for is to eliminate the .com in shop.bloomingdales.com.
I had not thought of that. A current .com site with a fair number of sub domains could probably justify this. But that is a pretty pricey way to shave 4 chars off your url.
Not sure what the other part of the domain will be for these as well:
"Visit www.bloomingdales!"
Lots of confusion on the way!
I'm not too impressed with ones such as '.CANCERRESEARCH' paid for by the 'Australian Cancer Research Foundation'. What a waste of money.