Many developers run business dependent on platforms. It's nice to have a place for discussion to see if it's a localized instance or a widespread issue.
edit: Seems to be jumping between in and out. It's a bad sign when your status page is tied to your actual site unless this is for traffic related reasons.
Discussing downtime events also holds practical value. If we are affected by the outage, having a news entry about downtime on hacker news allows us to share to one another useful information regarding how to respond to it.