I would fire me too if I were telling people specific questions in an interview. I tell things like to expect a whiteboard exercise, even if I'm not sure it will be given. I would never give a interview question or something meant to surprise.

Regarding your thoughts on representing both parties, that is exactly what I'm saying. It would seem more 'just' to represent the candidate. I'd like to see that model - companies need the referrals and candidate flow, but they can represent themselves without much risk. Candidates mistrust recruiters because recruiters are given the wrong incentives (representing both sides in a deal, but only one pays?).

No explanation needed on bypassing recruiters, that is a decision job seekers are free to make.