[socillion]

from HN comment guidelines (http://ycombinator.com/newsguidelines.html)

  "That is an idiotic thing to say; 1 + 1 is 2, not 3" 
  can be shortened to "1 + 1 is 2, not 3."

Parent comment can be shortened to "".

  Please avoid introducing classic flamewar topics unless 
  you have something genuinely new to say about them.

  Resist complaining about being downmodded. It never 
  does any good, and it makes boring reading.

[KonradKlause]

And which rule is "Oh, the The Linus Circus is in town again. Good times." violating? It's a funny statement. I like it. I cannot see any flamewar topic in it...

[socillion]

A good litmus test for knowing whether to post a comment on HN: is it useful?

If it is merely funny, trolling, or otherwise flippant, there are many other sites where such posts are at least tacitly encouraged.