I own the "wii" .net and .co.uk, all other ext's seem to be taken.
As for typo's, if this is going to be the official online gaming URL for the WII this should make you some nice pennies in parking since it will be easily typo'd IMO, time will tell, it's just a waiting game.. and a bit of hope.
Edit: Do any of the rumours seem in anyway slightly official? I mean is it just fan boy speak or have nintendo hinted something?