You are right though, making mistakes is human as they say, and nobody dies because of this. In fact, less popularity might be good for the site's content quality. I'm just surprised by how much they care about thousands of hourly users, that what I would dream of having.
Focus on providing people what they want/need, and don't worry so much about having flawless technology until you can employ a horde of PHDs.
So, how many customers do you think he lost because of this? The answer is two, and one of them signed back up because they were impressed by the great job he did in handling the fiasco.
Moral of the story: As long as you really are making your best effort, you might be surprised how willing people are to deal with human error. Yes, they might be be mad, but a mistake is (usually) not the end of the world.
For what it's worth, I upvoted this thread specifically because we've all done something this stupid (or worse) :)
Ok, so this is Hacker News, it's in the name, and most of us are aware that HN is also a research/hobby project. It's not made to be an rock-stable enterprise system doing bank transactions or what not, so I think what pg did was prefectly excusable. People make mistakes. Nobody will die without HN for a day or two, and it won't affect the site's popularity one bit.