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What spam? Seriously its a stupid "reason" imo. The only reason I can see for this would be to "make money" seriously. Competitions shouldn't be for making money. (At least I hope not.)
On the other hand. I "could" start my own compition XD win 1 SP Just upvote and resteem and send me a memo with a link to your story :\ XD (As a precaution against spam ofcourse cough)