Sounds like this person has put himself up on some/many job sites and is wondering why every recruiter on the planet is sending him referrals. Besides, if a particular company sends you a bunch spam, it's usually a 1-3 click process to add them to your spam filter.
As for the list he provided, I don't agree with the top entry. I got a great referral from WorkBridgeAssociates, and our company has found several good people through them as well. (Note: I do not work for or get any kind of recompense from them.)
Yes, that is certainly a possibility. And if they are that good, then they'd definitely have set up a spam filter and not have complained so loudly, so publicly. I don't really care too much either way about it. It seems to be too much huffing and puffing over a trivial issue.
As for the list he provided, I don't agree with the top entry. I got a great referral from WorkBridgeAssociates, and our company has found several good people through them as well. (Note: I do not work for or get any kind of recompense from them.)