With traffic stats for HN, so we could see if there was a change in traffic/participation, or something else.
My personal thought is that many startups have been advised by investors to trim the sails for less follow on capital for a while, and that results in more conservative hiring. What I'm seeing at the day job (I have a recruiting tech platform), is that non-tech companies have plenty of open tech jobs to go around - and still can't find enough people.