Comment by Glyptodon

I think the rate of non-fill is higher. But the reasons for it are all over the map. Everything from "we always leave a posting up even when we're not really looking just in case the perfect candidate happens to walk through the door" but in the mean time nobody really pays attention to applicants, to "we weren't getting the applicants we wanted with this posting, so we took it down and are trying a new posting," to "we're legally obligated to post this, but we already have a plan about hiring" whether it's someone connected, someone internal, or a preference for H1B workers, to all kinds of other scenarios. Anybody who has ever applied for a dozen jobs, sent literate applications and outreach, and has heard from most of them never to months later regardless of actual fit for the job knows this.