Given that the Mir discussion was on the front page some hours ago, this comment does have something _constructive_ to add.
"The most important principle on HN, though, is to make thoughtful comments. Thoughtful in both senses: both civil and substantial."
Or maybe you're agreeing with me? It seems strange to redirect me to the newbie guide then.
The definition of constructive is to serve a purpose, whether negative or positive it doesn't matter.