Collaborating organization, Tomorrow Lab, is up to some goodness. Make sure you follow them.
Prototyping a digital graffiti device from inexpensive off-the-shelf parts and a custom Makerbot housing. The device will mount to a street pole / sign pole, and allow anyone to deposit voice recordings into it by holding down a button on the device and speaking, singing, professing. The files are instantly available via connecting a USB cable to a computer. More to come soon.