There is nothing funny about a web service being down? Fuck. Everyone has downtime sometimes. 100% uptime is a fairy tale. Billion dollar businesses (like Microsoft) know this and try to hit lots of nines. This error is probably stressing the fuck out of a bunch of people right now. Someone might even lose their job. MS may have been hit by what in legal parlance is termed "an act of God". Who knows?
What is not acceptable in my opinion is that with this post being an hour old I am still seeing the site down. If anybody at Microsoft knows about this they should at least have a valid splash page in place by now. Redirect the whole domain to a static file somewhere if you have to.
It's only a blog so it's not really a big deal, but this is Microsoft. They should be completely embarrassed to look like this.