Cute Or Terrifying

On the face of it this handwritten note on the neighbours window is cute and funny. Pop some movie horror music on it, add a little backstory, and this becomes a terrifying note just before the killings begin again!

Barcode wikipedia

What a cracking idea, the Barcode wikipedia, from the Social Innovation Camp (4th-6th April in Bethnal Green, London, UK )
Create a site for storing user generated information to be stored against a product, identified by its barcode number. People would be able to access the info by entering/scanning the barcode number. The kind of information that would be stored against the product would be things like reviews, manufacturing conditions, news stories about the product/manufacturer, farm subsidies paid to the manufacturer etc. All entered in wiki form by end users.