the power of a smile

I read an article today about studies done on the power of a smile. It talked about an artist who made a painting, put it in a public spot, and put a sign on it that said you could take the painting if you, in payment, would smile at strangers for the rest of the day. People avoided the painting, until one woman came up, saw the painting, laughed loudly to herself and beamed as she carried the painting off. Little acts like this make me happy. On the other hand, I find it odd that our society tells people to smile at customers and if you're down just keep smiling. Is it right to tell someone to pretend to feel a certain emotion even if they don't? Is it right to tell people to put up a front around others? But, that's a whole new topic. Back to my point... I want to do something similar to this. We should combine our creative powers and make some art. Invest our emotions into art which we will leave on buses, on a bench, or sitting on the grass. Maybe.. instead of telling them to smile.. leave two art pieces.. and tell them to give one of them to a stranger that seemingly is having a bad day. What do you say? Will you join me? I'll start a facebook group on this if you're interested!