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And, yes, the point of STEEMit is to make STEEM.
And, yes, there are some whales who upvote their own Articles to make money, but I believe they are providing original content. At least the ones I saw.

The expectation is for people to provide some sort of original content, instead of a direct copy and paste. And maybe upvoting other people's comments, instead of their own.

But, you can do what you wish, until the powers that be do some sort of corrective action. I found this thread because I was reading another thread about someone abusing the hashtags and just accidentally clicked on this.