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In the beginning, you can control the beta testers mostly, so there wouldn't be cheating there. Eventually, the spirit of the whole endeavor, combined with members policing the issue would keep it down. A lot like we do here with Steemit. And Starva looks promising too.

Yeap. Thanks for the suggestion, I might actually do this :)

Maybe if someone organizes a run or walk event, bearing the name of your coin of course, they could be rewarded from the main issuance, or from others.

definitely talk to @steevc - he documents his daily runs on Steemit already, so he might be interested.