The only time I ever cared was when someone took a name I loved and butchered it with alternative spelling. It's already an unfamiliar name so I just didn't see the point. But I got over it and I never ended up using the name anyway. Nor will I now.

And I really think that unless you created the name yourself it's hardly intellectual property

The other thing with names is as soon as you pick a name you see it more because it stands out to you because it's familiar. Just like a new car up until you buy a new car you don't see them and then suddenly you see heaps