What I am talking about is another kind of the job Agent, they hire the candidate as their own employee, give them W2 form, then send the candidate to work at client comany's site as a contractor. In this case, Agent can cut the percentage of the salary they get from the client, only give part of that to YOU (contractor), usually they cut ablout ~40%. In this case, the cheaper labor they get, the higher $$ Agent can keep.
Thanks!