I applied through other source. The process took 2 days. I interviewed at Nielsen (Toronto, ON) in June 2012
Interview
The first round is a prescreen phone interview. The 2nd round is a face-to-face interview with the HR manager (1 hr). Behavioral questions are asked. Next you're asked to write a test that includes 10 questions/case studies. If successful the third round involves a meeting with senior team managers.