Bravo!
I'd like to apologize in advance to the 7 respectable recruiters left in the United States before I say:
Most headhunters are slime.
They are low level bottom feeders who are rarely capable of producing value for anyone else and can only produce income for themselves by engineering a scarcity situation where none would otherwise exist. They don't give a flying fuck about you or the companies except to "not bite the hand that feeds them". Now that times are tougher, they will resort to anything to make a buck, because they think they have to. Ethics and value mean nothing to those who have no ethics and produce no value.
Just a few of the "tricks" they are pulling these days:
They will list a job on the internet that doesn't exist just to collect your resume. They will lie about it until they are caught.
They will change critical details about a job to make it difficult to identify the company so that no one "goes around them" (when they don't have an exclusive).
They will edit your resume to suit their needs, not yours.
They will use you to show an example of an overpriced person so that they can easily place someone else.
They will make up total bullshit in order to protect "their turf", hoping that you're an idiot and will buy in to it. (I recently had a headhunter tell me I MUST go through them with a vendor referral to one of their clients. Huh?)
If you're lucky enough to find a good recruiter that can actually make something happen for you, hang on to them for dear life (that is until they switch careers). Otherwise, stay clear. Don't waste your time with job board entries placed by recruiters (I know, most of them are).
You're much better off getting up off your butt and going out and meeting people on your own. Do this without restriction. You never know when the person you met at a party, breakfast, or BBQ may be the one to send you your next job or contract. YOU are always your best recruiter.