Earlier quoted context omitted.
> If you're willing to be bold, walk right up to people and ask, you don't need to offer free coffee or gift cards. If many people did this, it would quickly become an incredible annoyance. Have some respect for the commons!
This. As much as it may work right now, because basically no one is doing it, as soon as it becomes a popular method, it seem to me it will stop working pretty quickly. Everyone doing it will become equivalent to a Jehova's Witness knocking on your door. That said, I imagine I'd be more okay with it if every time I said yes I got a free coffee. Aside: I wonder how different reactions would be in different countries/c…
Still: the method has significant costs. That's a good think in the "preventing overuse" department.