Hi,
I have only just parked, so too hard to tell. It's value lies in rarity, brandability & developed will soar up the search engine rankings due to it's generic term.
one example, there is a firm 'paying' as a sponsored link on google. their domain is mobile-phones-uk.org.uk
i've emailed them to say mobile.org.uk is available of course!
post offers or pm.
thanks, Predator