I do wish that if, say, GitHub is down, people wouldn't post a link to GitHub that won't load because GitHub is down.

If people want to post a link to a GitHub status page that provides more information, then fair enough. And if people just want to discuss the outage and there's no good source of information to link to then make it a self-post. But linking to a site that's down seems perverse.

Very good point about the discussion. I just look back to when Heroku was going nuts and remembering a good 15 "Heroku is down" posts every time it went down again.