I am not sure that the previous suggestions are correct. The arguement that google docs does not demonstrate that the publisher is a web master does not seem valid to me as there are many valid back links that come from people who are not web masters, such as forum posts and articles.
Also, it is widely understood that backlinks from within PDF documents count.
My suggestion is give it a go and see what happens.
However, I would agree that your document needs to be public and not private.
Retailer of Sloggi