I'd love to see sentiment analysis done based on time of day. I'm sure it's largely time zone differences, but I see a large variance in the types of opinions posted to hn in the morning versus the evening and I'd be curious to see it quantified.
e.g. how many are cali tech bros vs nyc fintec vs 10am moscow shillbot time
Yeah, I see this constantly any time Europe is mentioned in a submission. Early European morning/day, regular discussions, but as the European afternoon/evening comes around, you start noticing a lot anti-union sentiment, discussions start to shift into over-regulation, and the typical boring anti-Europe/EU talking points.