If many people did this, it would quickly become an incredible annoyance. Have some respect for the commons!
If many people did this, it would quickly become an incredible annoyance. Have some respect for the commons!
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/cultures.
Also a supposedly common scam is to get personal info such as names and phone numbers in surveys and, later, to use this information to make fake kidnapping calls sound more plausible.
The upshot is that you learn to ignore people who try to get your attention. I don't think it would work too well here.
Still: the method has significant costs. That's a good think in the "preventing overuse" department.
Don't be afraid to approach people and ask for their help! Most people would love to know that someone cares about their opinion. There are huge online communities that run entirely off this principle, like Yelp or Quora. If someone's not interested, they'll tell you.
I'd hate people walking up to me at random inside the coffee bar (UK reserve perhaps).
PS: to US Starbucks' shops run a tab?
I guess in a way that can get your site some publicity, but I gather that's not exactly what you're after.