It might be an idea to show CVs to companies without any contact information for free… then they have to pony up to find out who exactly this person is.
The reason I suggest this is because I can see many companies having an HR department that is in charge of finding applicants. I can also see those HR Managers saying something like this to themselves: “Do I just want to post a job ad on the sites we currently get all of our applicants from and that’s it… or do I want to have pay and do the work to have ANOTHER account on ANOTHER job site, for JUST 1 position?”
And on that note, I suspect that HR people aren’t really in touch with the “what’s what” in the software development world. How would they even know to look for SO? Can you imagine what the world would be like if this became a trend? Trying to find employees on per-industry job boards? And all of the job boards that would compete in single industries?
I’m rooting for it, don’t get me wrong, but call me a skeptic for now.