I'm not all convinced about the "wiki, so everybody can mess around with it" idea. NiQ's approach is rather sane. I've seen too many wiki pages going bonkers by edits of users that tried to add the useless detours they took, or simply "correcting" things they didn't understand. This is more unlikely to happen if the tutorial is really good and easy to understand, but in early stages you learn to hate when that happens. So "wiki - YES! But not immediately" :-)

Thanks NiQ! Great work.

/j