Is bamboo fiber eco-friendly?

When searching the internet for bamboo fabric, I came across a few very interesting articles about bamboo fiber used for clothing.
I like to share this and I am very interested to find more information about this.
I love bamboo and I think it is a very sustainable resource. However the processing doesn't seem to make it that way.
You can read the articles:
in the green guide
in green living online
on the organic clothing blog: this is a very detailed information.

Any comments and more info on this topic are welcome.