This sounds like a productive solution, per my reply to @tmn:
> My understanding is that employers already do pay to post on LI, indeed, etc. It simply works out that paying for ghost jobs is worth it, so the enforcement mechanism needs to be a ban/other thing that doesn't rely on pricing
I didn’t realize the LI, indeed, etc. Sites were charging per-head. Could this website be as simple as “an Indeed that charges employers per-month, to disincentivize ghost postings”?
I think the chicken-and-egg problem is a bigger deal than the dating-app problem; while it’s true the best candidates find jobs quickly, they don’t necessarily stop looking. That said if there’s no postings by employers then you’re dead in the water. How could the first 10 employers be recruited?