You realize that the title is obviously exaggerated and that I didn't gain $4000 on day one. I did however gain the kind of validation that eventually allowed me to gain $4000 in cash when we launched a month later.

For every person that has criticized this, I have had another one saying this is great. I also know for a fact that I'm not the first startup entrepreneur to do this.

I have already apologized to each and every one of our customers. I have also mended the relationships (AFAIK) to the extent that the "angry" customers would consider being customers in future.

Ultimately, I think that this was ballsy publishing this and being open about the pro's & cons of this. I'm not saying that this is the best technique ever and neither am I saying that everyone should follow this approach. I am however saying that it worked for us and I am keen to engage others on this topic.