This is a great idea, if it works. If you need some help, I could chip in with some testing or coding.
I work on both sides of this issue, so I have a stake in it. As a developer, I'm not interested in opportunities with no context. As a recruiter, I only want to forward candidates that have an interest in, and whose capabilities fit with, the position! Otherwise, I'm just wasting everyone's time.
Would the resource you propose also decode jobs posted on recruiter web sites with no identity provided?