This looks awesome.
When I installed it, the first thing I am greeted with is a screen asking me to enter my email address. Given that my email is a Gmail address, it notifies me about wanting to manage my contacts and something else (that was the first off-putting step in my experience). I just met you, and your hands are already going down my pants.
Then once I got in, the 1st or 2nd screen inside is about adding friends because it is better when you collaborate.
The only reason I saw the 'Skip' in the top right is because I was really looking for a way not to do this.
So I think the issue I have with this workflow is that the expectations that the landing page set are one thing (i.e. awesome document creation on mobile devices) and then the experience is pushing me into a "hand-over-your-address-book-and-get-to-sharing" experience right off the bat.
I get the whole "viral loop" thingy, and baking it into the product experience, but I feel like it would leave a better taste in my mouth if I was nudged into it - rather than broadsided.
That being said, I am likely to continue using it and playing with it (because of the potential value that a word processor made for an iPad can have).
I was just put off by that digging into my address book experience...that's all.