Ask HN: How to validate a business idea before building the product?
I'm working on a B2B product in a specific niche (http://www.untab.io). Before spending a ton on development or marketing, I'd like to get some indication of whether this is a real problem beyond my own circle of friends and colleagues.There are some standard ideas on how to find potential customers - e.g. through social networks, personal connections, etc, but I'm curious what has worked for...