I've tried to create a new blog called "Space Cow" and I cannot use http://spacecow.wordpress.com
It's not owned by anyone. In fact, when you enter there, it says "spacecow.wordpress.com DOESN'T EXIST"
Below that, it says: "The address spacecow.wordpress.com is reserved and cannot be registered, but you can sign up and choose another one."
So, I think it's because someone created a profile with "Spacecow" as its name. As the name of your blog is the same as your nick, I think that it is the reason it's "reserved".
So, what should I do to get that url free? I mean, if it's not being used, it'd be logical to "free" it and let use it.
Waiting for an answer,
The blog I need help with is javilight.wordpress.com.