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I would target people who like and participate in debates and avoid over-emphasizing the blockchain back-end. I'd focus on front-end features such as an easy on-boarding and an engaging experience - e-mail notifications for selected topics, questions asked directly to people based on their past interests, etc.
The key is to bring in people from ouside the crypto and blockchain sphere and show them the benefits of blockchain -based implementations but in a natural, non intrusive way

Sounds good but we're using Steem blockchain and this is a problem for non-blockchain person.

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