Excellent idea, Tim. Perhaps we should see how Torq's scheme goes? I don't mean to sound negative but it's just in my experience 'big' projects which are carried out by volunteers, usually start with a lot of enthusiasm and fire and then either get mired by a lot of discussion about how to do something (rather than going ahead and doing it) or people lose interest and drift away. Content high projects like these need a project manager with a really sharp vision and contributors who do not take offence if their content is edited by the PM.