What is Shopper Research?

Researching the web I came across this insightful video 'TNS Market Research - What is Shopper research?' from TNS Global. Appropriately titled, the video explores what shopper research is and touches on these 4 pillars: Shopper behavior, idea, expression, and experience. Take a couple of minutes to view the video. How is your organization using shopper research tactics to get in the mind of the consumer?