This is how I did it for my first failed startup which did not go beyond the survey phase 1. Make a list of fb friends who would be interested, add them to a g

This is how I did it for my first failed startup which did not go beyond the survey phase 1. Make a list of fb friends who would be interested, add them to a group, a secret one. 2. Try to validate the idea 3. use reddit to validate the idea 4. using HN is tricky because you can't guarantee that the post will get attention.