HOW DO YOU DETERMINE INTERESTS?
I made Crossclash as a competitive crossword puzzle. It is "not 100% polished yet." So when Ben Yoskovitz showed a different kind of crossword, I had a product question: "How do you determine interests?"
Ben had built a daily puzzle for his dad, personalized around his interests. It arrives by email, with an online version and a printable PDF. He was testing demand before building further.
His answer was straightforward: people select categories manually and can add specifics, such as "Hockey - Montreal Canadiens." The personalization starts with the player telling the product what they care about, rather than the product guessing.