I'm sure it's painful, but thanks for sharing. I agree with cup, that reading about failures can be more valuable than reading about successes.<p>If anything, your story adds more fuel to the fire for the approach that @sgblank advocates[1][2]. Get out of the building, talk to customers, validate customer needs, etc. We've been doing this, but - to be honest - we haven't done as good a job as we could. Hopefully we will soon start another big round of Customer Development interviews, much more targeted this time, building on the feedback we got the first go-round, and moving more into what Steve calls the "Problem Presentation" phase.<p>It's a tough slog, but I continue to remain convinced of just how important it is.<p>[1]: <a href="http://steveblank.com/category/customer-development-manifesto/" rel="nofollow">http://steveblank.com/category/customer-development-manifest...</a><p>[2]: <a href="http://steveblank.com/category/customer-development/" rel="nofollow">http://steveblank.com/category/customer-development/</a>