Somebody came up with the idea to mashup google maps with the concept of a wiki. You can see the result here.
It's a great idea, but the implementation might need a few tweaks. You don't have the option (at least that I can find) of reverting back to previous versions. That is a must, in my opinion, to prevent vandalism.
In other wiki news, a very interesting experiment is going on in CA. Registered voters can participate in a virtual political boot camp. Participants "create a platform of issues they hope a real political party would adopt as its own." Come on, you've got to admit the concept is incredibly interesting... The only problem is that people would have to actually get involved. Which is a lot to ask of a democracy...
I can see special interest groups slathering over it now.