After a couple of tries with "headhunters" I decided I would never work with them again. If a recruiter, directly employed by a company, reaches out to me for a position in said company, I find it agreeable to look at their proposition. But this is only because the incentives are correctly aligned in this case. Headhunters are incentivized differently, to your detriment. We should be looking to abolish the need for headhunters in the tech industry.