The job I had before this one, they called me after looking at my resume on
www.careerbuilder.com. My job before that one, I found on Yahoo jobs (which is now
www.hotjobs.com I believe).
Honestly though, even though I found those online, I job searched my patootie off using various sources though (online, networking, cold calling, etc.).
The job I'm currently at I got through networking though (they never advertised for this position).
