There's also the popularity of HN itself and the popularity of posting jobs on HN that's an important factor.
You could both normalize the figures and include a separate graph for job posting density per month or something like that. Total posts on HN monthly would also be interesting to visualize. Is it trending up or down?
There's also the popularity for HN based upon the particular language.
It's possible there's skew where rust becomes more popular say, and gets the bulk of the new posts, but python or java aren't super interesting anymore. So those people stop showing up to HN.
I'd like to see the popularity of posts by language. I bet we'd see a lot fewer Java and Python posts compared to Rust.
