In the world of any, anyone can find out where you are at any time. A perfect case of Blogarazzi-bummer, your facebook updates, tweets, and geopositioning like foursquare mean that your whereabouts are a mystery to no one anymore.

That means that you can save energy, you don’t need to set a timer to the lighting in your house, you’ll have no one fooled anyway. Anyone can tap in on your whereabouts. In fact, they don’t even have to access your facebook account, blog, microblog or geopositioning, they can just have their pick of empty houses at pleaserobme.com, which lists people leaving their homes in real time.

Maybe that’s the world of any’s sustainability solution – 1) saving energy when out of your house, and 2) recycling possessions between people..?