It sucks that the OP's website didn't "blow up", but then again, most micro-SaaS's are not meant to go viral like that.
One point I would add is that there should be more promotion other than just posting on HN + PH. If that's where your launch stops, you may not be realizing your full potential.
Another little nitpick; The domain they used (EarlyBrd.io) was kinda weird due to the unconventional spelling. Yes, you don't need a dot com, but it should still be something you can mention in conversation and have the other party instantly understand & be able to spell, without you spelling it out for them.
Lastly, why does everyone here seem to care more about post titles than actual posts nowadays?