This is all really interesting. My concern about it is that wouldn't I be reinventing the wheel on this? Doesn't Wikipedia kind of cover most of this stuff already?
In a sense yes, which would make it a pointless exercise. Do you believe everything on Wikipedia though? I don't (although I do use it regularly ::) ). I'm not saying it should be done but wikipedia articles can be improved upon just like anything else. This would be a wiki of your voicing, a history that members can contribute to. Still an interesting thought even if it's not really viable yet. It would take too long to implement properly and you would need trusted people who could look after it while you work on other things. Back burner for now methinks ;)