Flag

Flags are simply a negative vote. The difference between an upvote and a flag vote is that you will not earn any curation awards for flagging. While upvoting ads reputation to the author, a flag will remove reputation from an author. In both up and down voting, the effect of your vote is determined by your own voting power.

Flagging is NOT used as a method of disagreeing with what the author wrote or to show that you don't like the topic chosen by the author. Flagging should normally not be done except for situations where the author has deliberately and repeatedly broken the rules of conduct on the Steemit platform.

Plagiarism would be a reason to flag someone, but generally only after politely explaining that you think the author has used unauthorized content. The author should be given sufficient time to respond and correct their mistake or prove ownership of the content.

Inappropriate use of tags would be another reason to flag, but again, the same courtesy should be shown to the author due to the fact everyone can make a mistake.