One mistake we made earlier was to ask ppl "Would you use our product" instead of just giving it to them. 99 % will say yes, because generally people want to be nice.
If you SPEND TIME explaining the concept, you need to give a chance for people to try the product asap. Even tho it's not pretty yet.
I mean, Boxio was not a pretty user experience for the first users, but we closed our eyer and gave it to people. I only wish we could have done it even earlier. Now there are 100 Mac ppl signed up.