Ask HN: Would a website that shows the tech stacks of nearby companies useful?

I'm working on a side project that's interesting and useful to me. - 50% of jobs aren't advertised. This can help tech jobseekers seek out employers who match their tech skills but aren't openly hiring - Shows languages, databases and all other commonly used tech products in an organization - Jobseekers can potentially bypass recruiters and negotiate better rates Would this be useful to anyone else?