I remember one thread which I can't find, which considered whether Hacker News counted as a site that should be disclosed. I also seem to remember a claim that having an account on a site with "Hacker" in the title was an automatic disqualification.
Hmm, this is the one I was thinking of: https://news.ycombinator.com/item?id=17635403
and https://news.ycombinator.com/item?id=20071287
