Why not create a peer review, recommendation type system? To post an RMS post, you need an "OK" vote worth 1000 karma points. If you have more than 1000, you can post. If not, you need to to show your post to other people you know or met in HN and if they "OK" vote it, their karma gets added to your post's karma tally.
People can "OK" vote your RMS post by visiting your profile.
People can "OK" vote your RMS post by visiting your profile.