I applied online. The process took 3 days. I interviewed at Nielsen (Jacksonville, FL) in Nov 2011
Interview
Initial phone interview with basic questions, background check, then in-person interview that included a test that took no longer than 1 hour, then call back to offer paid training that concluded with a test.
I applied online. The process took 1 day. I interviewed at Nielsen (Oldsmar, FL) in Jan 2012
Interview
Very Casual, very friendly. Hands-on interview that proves if you can do the job or not by going through a sample of what you'd be doing on the job. Job was easy to train for.