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No, they are not profitable. I just use them to improve visibility of my posts so it is like investing in marketing. Will it payoff someday, I don't know :-)

Okay I was more curious then anything..I see it all the time but just didn't know the purpose or if it did something I didn't know about. Makes 100% sense though. Time will tell and I hope it does for you and others and all of us on Steemit lol

Thanks :-)