I thought the worst part is the example of the park for contracts. First, as described you still have to trust the holder if the amount is reached to do the right thing. Second if he has coins of his own he can send to that address to trigger the opening. If it is true that you can write scripts like that it's pretty cool, but a bad way to use it. What should have been mentioned there is that you can give three or more trusted community members the keys so they all have to 'sign' off on any transfer.
The first comments read like they are from 2010.