Earlier quoted context omitted.
You spent 15 minutes looking at the beta version of a product, and you've made the decision that the creator is wasting their time? Have you considered that, having thought about it for months, they might understand the problem domain significantly better than you? What if the product actually has tremendous value, but suffers from a marketing problem? That's a pretty easy problem to fix. Rather than using your sever…
Wow, great advice there "just keep your mouth shut". For anyone who has actually invested a large amount of time in a dead idea, the above poster is right on the money. I think you should take you own advice and talk only about things you know intimately. Lest your sentimentality gets the better of you, when actually trying to address a problem that could suck OP's life down the proverbial toilet.
I think the issue here is that the above poster has probably not done his due diligence to actually verify the premise of this statement (that the idea is a dead one).
I could be wrong on that, but I see almost nothing in the post that refers to anything about his experience actually using the app.
For what it's worth, I'm trying to use it right now but I think the site is getting slammed by HN, so I can't actually use it. Therefore, I'm not going to tell the OP that he just wasted all his time and money.