If you're in doubt, walk outside and ask the next 10 people you see.
I do this everyday. Used to pass out .01BTC to anyone who would get the wallet app on their phone on the spot. I can say first hand that 90% of people haven't heard of them (in a young town) and of those that have, almost none of them know more than 'Oh yea, its that internet thing right? I heard (some dumb nonsense)'