I am the original poster. The purpose of the post was to get the issue fixed (since support gave me the run around). Now that it has been fixed (and confirmed), I have updated the post to reflect that and have hidden it (as it is no longer relevant).
If you are referring to the "hide" link that an ordinary HN user sees (I have no idea what the non-ordinary HN is like for mods et al), I believe that just hides it for you, not everyone else.