In fact I just checked, and HN is honoring the two spaces, in that they are output to the actual HTML sent to your browser. And of course, yes, there were other trends that would have ended this anyhow, "two spaces" in meaningless in a non-monospaced font and ever more stuff is going proportional as the computing power necessary to do that continues its steady march from "prohibitive" to "trivial", but the WWW certainly beat the corpse to death again.