I saw the rose trick quite a lot through Germany in 2011, but I had no need/desire for a rose so I never fell for it. I did fall for the "free US flag sticker"

I saw the rose trick quite a lot through Germany in 2011, but I had no need/desire for a rose so I never fell for it. I did fall for the "free US flag sticker" in Philadelphia on Independence Day 2011. Supposedly it was some charity's method of fundraising.