As you, I never flagged anybody here, but in the last month I flagged the distusting childporn account. I'm still shocked to find people like that disgusting person here, but the community answered to this using many flags and so I'm happy to stay in a community that hate these horrible people. I flagged also other people who damage community (copycats, scammers, etc) because we users are the only ones who can help this community to stay "clean". It's our responsability.