An american graduate posed the question to one commentator at Going Concern:

Is it possible to negotiate your salary by playing other Big 4 offers off of each other? I already have an offer from one of the Big 4 and I have plenty of time to accept. My resumé is stellar and I know I can land interviews and offers with the other 3 Big 4 companies.

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In short think: new graduate, little leverage, crap economy. Hmmm.