I've developed railsjob.com as my very first learning project on Rails ~5 yrs ago. It has been running and let anyone posting jobs for free since then. I get about 30-40 jobs every month, it's probably making $100 per year from adsense.
I know most profitable job boards charges $100+ per job and they are often linked to sites with large followers.
I'm just wondering what I should do to make this site more profitable than it is. Should I add more features, or look for partnerships with bloggers or just simply charge for job posting?