This would be an interesting twist on a job board. After reaching critical mass, charge recruiters to see the updates. They get a pool of people they already qualified when they're actually looking and developers get more control over the process.
Wow. Charging someone to help you find a job. Now that's really flipping the script!
I was thinking that the job board would get all of the money, but revenue sharing with the developers would be even more interesting! The amounts paid to external recruiters in this industry are insane...
Aren't you basically describing a (better) LinkedIn?