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You need to find a community of people ready to show up and start asking and answering questions on the site. For example, the recently-launched "Drones and Model Aircraft" site recruited people from a number of UAV forums.
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According to the text above, I should ask off-topic.
No, that's not what it says. It says if you're not sure whether a question would be off-topic or not, you should ask it. If you're skeptical about whether a question is in scope, and think you cannot afford to lose reputation, you should not ask it. Or ask it anyway, and if it attracts too many downvotes, ...
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