Hi
1) This is the real challenge to any jobs site for that matter.
2) The success depends upon how you differentiate your site from others, the market you choose, the prices, the features etc.
3) Getting jobseekers without many jobs or getting companies to post on your site without much activity is a herculean task. Not that easy. Also right now jobberbase has no online CV maker/cv db or online employer/jobseeker accounts, which makes your marketing still tough until the new version comes where these features are expected.
4) Frankly the jobberbase right now available is more useful directly as a Job board to the employers rather than a job site.
5) To turn a jobberbase site into a jobs website and marketing it is a challenge. Simply having a site doesn't help where there're mushrooming jobsites in the market. But can tell you for sure, if you make a difference, you will succeed. I mean product differentiation is where the success.
Hope my answer helps.
Thanks & Best Wishes
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