If I were you I would prowl out climbto350.com Usually you can type in the plane type and location into airliners.net and get the name of the company that is hiring.
For example you might see "Saab 340 F/O's needed Manassas, VA", so what you do is go to airliners.net, goto the picture database select saab 340 and then Virginia as your location and the results will come up with pictures of colgan . Thats is what I do and it usually works and it's free
The listings on climbto350 have decrease dramatically over the past 6 to 8 months. I've found other sites - namely USPilots.com to be completely useless. They rarely change the listing even after the job is no longer available...and the site is impossible to navigate.