> There have been numerous stories on HN where someone directly involved with the story has created an account specifically to engage in discussion about whatever the story was about.

Yes, and sometimes some of the HN automatic filters kills the comments. Remember to "vouch" the comments if they are interesting/relevant, a few "vouches" unkill the comments. And in extreme cases, send an email to [email protected] so dang/tomhow can take a look and use some magic to fix the problem.