Ask HN: anyone interested in forming a group to review each others' copy?

I'm creating a new site for an iphone app I've developed, and I've been writing a lot of copy. It'd be very helpful to me get others' feedback, especially from folks here who are in the same boat. At the same time, I'd be very happy to provide feedback for others. I am not a professional writer but I do think I'm able to provide constructive criticism for most kinds of writing.

In the past I had created a web site, hallwaytesting.com, which was supposed to be a community for people to get usability and give feedback on their sites. I shut it down because I and one other person were providing the majority of the feedback, while most people would only ask for feedback and never give it. I'd like to prevent that from happening again, so I think it would be better to have a private, closed community (or group of communities) of people who could learn about each others' writing needs over time.

If it's an indication of the kind of the writing feedback I would give, you can have a look at http://www.usabilityfeedback.com/example/overall_impressions.html . I would probably not go into such exhaustive detail (the above is a paid service), but it should give an idea of how observant and articulate I am.

I'm not sure how to get something like this organized, so if someone's interested and capable of organizing - please lead the way!