Powerful communication

Jon Steel describes advertising as a simple form of communication. He uses the example of the sign 'Will work for food' often held by homeless people to demonstrate this fact. Steel regards this example as a powerful piece of communication which works on several levels, referring to the prejudices often held against homeless people. Continuing on the same lines, I believe the sign below does the job. It would catch my attention, make me smile and I would be more likely to give money.
Source: Truth, Lies and Advertising and Sara