Very simple. Application online required two essays and the usual resume, cover letter and related materials. The essays were clearly meant to illustrate that you were a clear and cohesive writer. Afterwards, I received a phone call from Human resources. They asked a handful of standard behavioral interview questions, and that was it. Received an offer the next day.

FIrst you send a resume and cover letter, along with two short essays. At this organization, having an internal referral is crucial for getting your resume looked at. Then you may be called for a 45 minute interview with HR (very pleasant). Finally, you may receive a complicated writing test that takes an entire weekend to complete. The application process is almost as rigorous as that of an entry level job. While I have heard the actual internship is great experience, very few interns ultimately get hired full time (i.e. maybe one or two). Seems like a wonderful experience for undergrads, but puts post grads in a precarious position. They capitalize on hiring eager, highly qualified post-grads for what is essentially an entry level role with no benefits or job security.