Unfortunately, a job search aggregator assumes that companies religiously post new jobs. The reality is when a company wants to hire it 'may' post a job to cover it butt in case of an EEO complaint. Mostly they have internal candidates, internally referred candidates, retained recruiters, applicants from career website who all rank above an external job site. My guess is a very low percentage of jobs actually get filled by job aggegator sites. imho The number of applicants from these sites is just too much, far less qualified and trusted compared to other sources.