The Internet is a knowledge agora or a knowledge commons – that has been a vision since the early days of the web. But now, we see that some of the tools are getting mature, which are truely built by all for all for free. I am now getting more and more into wikipedia editing, such as the entry of UNESCO. Check the Entry on UNESCO – in Englisch (see my first edit in 2004, check all my historic edits in the English Wikipedia here) and in French or the entry on Waldbronn at the Open Directory Project.