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Wouldn't a lotto cause an influx of spam? I seen this problem a lot with places like TSU and Rabadaba. People just post random junk. ANd sadly were rewarded for that behavior.

No all you have to do is use reputation score and/ or a minimum Steem power to eliminate bots and spam. If you spam every hour you won't get a reward even if you win due to posting limits. You should vote every hour though. Low reps aren't legible so wouldn't want to spam on small chance you win . Read the link.

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