Answer :
steemit is a website where user easily earn some coin of steem or STD .
and here you do work like a blogger .
you post blog daily and earn money . if you earn more than create a great and easily understandable blog here.
if your content is not copy paste then you got more comment and upvote and earn more.
upvote is like as a facebook like . for example . someone visit your profile on facebook and he like your post mean has here it is upvote in steemit .
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From @shahid17