which action(s) are appropriate for exact duplicates? Should I flag them, or vote close them, or both, or something else? I am trying to understand how to flag, which I never do. I read some other posts on meta that try to clarify this, but I am confused because if there is a vote to close feature, why should I also flag the question, since I already voted to close.

Flagging seems only appropriate for spam or personal insults...