"Don’t launch when somebody famous is in ill health." Is this intended to be actual advice? I think the real issue is a shabby product, especially after seeing "make sure your service can sustain more than a couple of people at a time" and "the next 48 hours were spent fixing hundreds of bugs".

Looking at the website I am impressed you at least have an SSL certificate, cause it doesn't look like much more effort went into it. I'm even more confused looking at the about page, it lists David as being a rockstar programmer who enjoys working on difficult scaling problems, yet he didn't plan for more than a couple of users?

If you want to make your service succeed put an embedded Minecraft applet on there and have it link to some of your public servers, maybe even let the user select from a few of them. Just do the same things as http://minecraft.net/demo. Add some color to your site, your target audience isn't a bootstrapped web developer, it's a highschool kid who wants a Minecraft server. Add a big old buy now button on that homepage. And why does the Sign Up page not have the pricing options?