Which market research technique would most effectively help Odin determine why his digital marketplace 'Valhalla Ventures' is losing customers to Thor's competing platform 'Thunder Commerce'?

In the competitive world of e-commerce, even mythological figures need effective market research to succeed! This trivia question explores how ancient Norse mythology intersects with modern retail analytics. Would the gods and goddesses of Asgard know how to leverage consumer data? Test your knowledge about both mythology and retail market research techniques in this unique challenge that bridges ancient lore with contemporary business practices.

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Sentiment analysis of customer reviews using Huginn and Muninn (Odin's ravens) as AI data processors
Consulting the Norns (fate goddesses) to predict future market trends without analyzing current customer data
Using the Gjallarhorn (mythical horn) to broadcast surveys without targeting specific customer segments
Drinking from Mimir's well of wisdom without conducting competitive analysis of Thor's platform features