My reputation suddenly dropped 1.0 points, does it mean somebody flagged me?

It is because you had done copy paste work in steemit so we should never do copy paste work in steemit because cheetah is a reboot which can detect from where we had copied and he comment on our blog with link from where you had written.
So new ever try to do copy work in steemit and so our reputation score goes on decrease mode .you have gone 1 reputation score down but my friend got 25 score down so I hummble request to everyone that don't do any type of copy paste work in steemit .write in your own words.