I had a 3-month job search over the last summer, encompassing about 150 contacts which I filtered into roughly 25 actual interviews. It takes an enormous amount of time to deal with all the various interview techniques out there. Such as:

* Four or five-hour interviews. * Interview prep suggested by recruiters for tech interviews. * All-day work sessions pairing with employees. * "Homework" that can take anywhere from 5 hours to days. * Multiple online sessions, each to solve a tech riddle.

I can't imagine how I could've done this when holding a job at the same time. I'd have to be incredibly picky about who I chose to interview with - which means, I wouldn't have interviewed with my current company because they didn't interest me during the screening, only until after the interview when I got to talk with actual developers.