A friend writes about the Public Listening Project. A couple of guys go to a public place wearing T-shirts printed with a subject (The War in Iraq) and the question (What's your opinion?) And they listen. Here's a partial description...
Wearing our t-shirts about once every two weeks, we typically stand in a public area waiting for people to approach us to offer their opinion.
People "select themselves" to talk to us. Once approached, we generally encourage them to discuss their viewpoint as much as they would like to, always listening respectfully, and asking other questions whenever it is appropriate.
Depending on their schedules, people will talk to us for varying lengths of time and usually leave feeling appreciative of the opportunity to have expressed their opinions. They will also almost always talk to us again if they see us another time.