What I don't like about this idea is that, seeing as companies have scads of money and job-seekers generally don't have any, it seems unfair to put fees on job applications. Unless they were limited to a certain level (say, $5.00) I wouldn't support it.
What I would do is create a job-search site where each application costs 1 credit, and encourage employers to spend a lot of time using my well-filtered site. Each member gets 12 credits for free every year, and more credits can be purchased via a premium membership. As the site branched out into a career site, with discussion boards and networking, credits could also be given as a bonus for positive contributions. Limiting the application volume solves the spam problem, though.
What I would do is create a job-search site where each application costs 1 credit, and encourage employers to spend a lot of time using my well-filtered site. Each member gets 12 credits for free every year, and more credits can be purchased via a premium membership. As the site branched out into a career site, with discussion boards and networking, credits could also be given as a bonus for positive contributions. Limiting the application volume solves the spam problem, though.