Pros
Some perks for the field - car, laptop, internet, phone, holidays. Semi - autonomous work, can set own schedule 50% - 75% of the time. Work from home.
Cons
Employees are viewed as commodities with little to no regard to personal life. Employees are incessantly rated against each other every workday, week, month and quarter. Nights and weekends are spent worrying over your performance for the past and future. On top of this, bonuses have been pared back 20-30% and part time help has been eliminated for those in the field - an ever increasing workload. If you like being a number and treated as such, Nielsen is the company. Money quotes from an upper management person during a conference (when confronted with all the negative sentiment from the field): "I am just trying to survive myself" and "I would advice everyone to keep their resume up to date".