Not scalable? That's what most people are doing for salaried jobs. There is a tiny sliver of people that found their jobs on Monster.com, there is also a tiny sliver of people with 'connections' (they're not the 1% for nothing). Everyone else muddled through job fairs, online listings, and cold calls to get their jobs.

My work history and how I got the job, pumping gas (family), McDonalds (cold called), ski shop (cold called), engineering internship (cold called), startup internship (cold called), fortune 500 company (college job fair), startup (cold called).

Cold called = email, showing up in person, or picking up the phone. But it means 'the job was never listed anywhere'.

My girlfriend has had many more positions, but the main ones were temp (temp agency), 1st internship (cold called), better internship (bosses at both internships were married, when husband at first internship could no longer pay her, the wife hired her elsewhere), temp job (temp agency), crappy job (listed online), awesome startup job (cold called).