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A clever botmaker won't have any problems with those.
I think it's only a matter of time before we start seeing flood attacks on SteemIt. I propose that new acc are limited until certain thresholds are met.

For example, it must first assess and comment on other posts?

Never stopped people from trying to clog bitcoins blocks :] But Im not aware of any Steem Futures Contracts as of yet, So really no way to profit from FUD.

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