By the way, slightly off-topic but this paper might be of interest to those discussing the different types of openness. He even includes a section on "communities"!

http://deposit.depot.edina.ac.uk/230/
The Open vs Closed Debate.
pp. 30-47 of Vol 30(3) Journal of Information and Management (ISSN 1882-2614).
Published 2010.
Professor Andrew A Adams
Professor at Graduate School of Business Administration, and
Deputy Director of the Centre for Business Information Ethics
Meiji University, Tokyo, Japan