They are very good. They have a computerized database to match folks up. I'v used tham as an employeer also and I got a couple of good cantidates. Plenty of jobs but most pay poorly until you have a few years under your belt. Also most very good jobs are filled via networking.
Most agencies have a better list of jobs for a certain geographic or industry segment.
Watch out, some charge and arm and a leg, and if the job doesn't work out you don't get your money back. Stick to the ones that the employeer pays the fees, these are probally better jobs anyway. They have a computerized database to match folks up. I'v used tham as an employeer also and I got a couple of good cantidates. Plenty of jobs but most pay poorly until you have a few years under your belt.