David Wiley has posted a blog where he attempts to define what open content means:
Wiley, D. (2009) Defining ‘open’ Iterating towards openness, November 16.
Wiley defines four characteristics of open content – the 4Rs – and the discussion following the blog is also interesting.
Thanks to Burkard Lehmann for directing me to this.






Dr. Tony Bates is the author of eleven books in the field of online learning and distance education. He has provided consulting services specializing in training in the planning and management of online learning and distance education, working with over 40 organizations in 25 countries. Tony is a Research Associate with Contact North | Contact Nord, Ontario’s Distance Education & Training Network.

