develop freelance jobs aggregator site. Aggregate job listings on Elance, freelancer and scriptlance.
Should be Search Engine Friendly with atleast 100 backlinks from established one way pr 3 or above static pages/links (Must use and gurantee white hat SEO methods only. No backlinks from farms or other shady sites, reputable directories only). Quick to load & fully optimized.
Allow monetization through affiliate programs, contextual ads, banners etc