To find out when and how it was created and gained momentum, and see from multiple points of view its speed (chronological, geographical, generational, etc.)
Analyze online sources of data to find the first occurrence of a word or phrase and plot the spread and usage.
You would like to know if your buyer does use the product you sold them and how often.
Have a “sticker” or “button” that you ask them to stick to the product they bought, and a smartphone app or the device can connect to a home wifi network directly (you can offer an incentive like a discount.) You explain to them that data is anonymized, and it will help you create better products for them in the future.
Whenever they use the product (make coffee with their new machine) or consume it (read the book to their child) they “activate” the sticker. They do so by waving their smartphone near it, or pressing a small button on the sticker), and you’ll get the data through their smartphone or directly through their home wifi.