Findings:

• Nielsen Ratings System
• Credit rating
• Robert Nielsen
• involvement/immersion rating system
• Michelin restaurant rating
• Kai Nielsen
• Sarlo's Guru Rating Service
• tire speed rating
• The Accipiter Cookie Rating System
• Brigitte Nielsen
• Landmark speed rating
• Shulgin rating scale
• rating community
• quarterback rating
• Elo rating
• Movie Ratings
• video game ratings
• ratings for everything
• Fiction rating system
• rating system
• Safety Helmet and Assessment Rating Programme
• HMIS ratings
• chess rating
• rating
• Pomeroy Ratings
• Entertainment Software Rating Board
• Social Readjustment Rating Scale
• computer ratings systems
• Who's Rating our Games?
• Canadian Home Video Rating System
• The Ratings
• bag rating
• Nielsen
• approval rating
• The 1-0 Rating System: Streamlining Female Attractiveness for a New Generation of Oglers
• Classification and Rating Administration
• Jakob Nielsen
• summated rating
• Tire ratings

If you Log in you could create a "Nielsen ratings" node. If you don't already have an account, you can register here.