You point out the obvious concern. It'd be nice if this information was available about candidates up-front... as an employer it's on the list of things you'd want to know about someone along with what primary skill-sets they have and roles they've been in.

The problem, of course, is that by advertising this information, candidates would basically be saying that they're not getting nurtured in this way by their current employer. It's would be a public notice that they're not that happy at work.

I was trying to avoid any sort of "pitch" in this comment thread, but you've set me up too nicely: My startup, Mighty Spring (https://www.mightyspring.com), makes a passive, anonymous job search platform. Candidates post this exact information: what interests them and their career goals, along with their qualifications, which employers browse and use to decide who to interview. The anonymity makes it possible for candidates to safely reveal this info to employers. Also, that this info is available up-front helps to increase employment market efficiency and expose candidate/employer matches that really are great fits for both sides.

We're currently in private beta, but send out invites regularly. Feel free to email me (addy in profile) if you've got any questions!