From the HN guidelines: On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a

From the HN guidelines: 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. [...] Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it.