Candidate Sourcers

Candidate Sourcers specialize in finding names of potential candidates, so that makes recruiter's work much easier.
Here's the example of Candidate Sourcer's pitch (from www.ere.net):

I am a name generation specialist, with 22 years experience. I do not charge as much as others, only $16.00 a name. I do not do internet research, as I learned my skills before there was an internet. So, if you're looking for someone who will give you more than just internet searches, I am very good at what I do. I pick up the phone, call directly into a company, and take either targeted titled people working there that day, or everyone in a department or the entire company. I average about 100 quality names a day, all names guaranteed.

You may notice that this activity is quite controversial:
On the bright side -- sourcers and proactive recruiters help people find another job and companies find good professionals.
On the dark side -- sourcers and proactive recruiters take employees away from companies. Even if employees stay -- sourcers' and recruiters' calls distract employees from work -- sort of phone spam.