I wouldn't limit myself to the 'traditional' ways of learning about users. I'd dive into sources like Quora, Reddit, and even YouTube to gain a deeper understanding of my target audience. No matter how specific your target users are, there's always an opportunity to learn more about them.
The next time you find yourself in the dark about your current or potential users, take a deep dive into online research. Putting yourself in their shoes will surely lead to new discoveries.
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