I really don't like it. Not that I'm totaly against, and hate anyone who has done it, I just don't see the point. To me, it's hand in hand with tying a dog outside because there's too much hair, or tail, or slobber, etc., if you don't want to put up with the bark, or hair, or tail, etc., don't get a dog...
However, in apartment situations, where it's debark the dog, or get kicked out, I can see it...
Honestly, the 'bark' they make is like nails on a chalk board to me. Just too much for me to handle.