"our peers competing to put forward Who Is Hiring threads by submitting them increasingly prematurely"
Maybe this suggests that >1 submission a month is better?
Finally, perhaps it'd be best to stagger the three post types throughout the month so they don't compete with each other for attention?
1 good quality, well organized hiring post a month is awesome..
And this isn't just about making it easier for job seekers -- we want to make this easy for employers to encourage them to come here when they're looking for talent.
So yeah.. first choice for me would be a top level HN link like 'Ask' or 'comments'.. second choice would be someone write something external that people could always go to for HN job posts.. I'd probably go as far as to karma-wall users posting on the site too..or at least allow users to filter by it.. or just rank job listings by karma achieved in the HN hiring threads. I dunno. But yeah... once a month on actual HN is plenty, IMHO