Could you elaborate on what is HN if not things that hackers find interesting (particularly "very interesting")? Not to be pedantic, but:

"On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity."

Also keep in mind that some of us no longer follow Reddit, so we might prefer if HN took a slightly broader view than Erlang innards.