If I were designing a system, I would create a robust system of flags. I would concentrate on concerns like spam, plagiarism, identity theft and other forms of abuse. I might also have positive flags for truly creative content. My system would probably apply the flags at the account level and not an individual post level.

As another post mentioned, Hive uses downvotes and not flags.

The people who read the whitepaper say that the downvotes are about awards distribution. It is a tool to help protect the rewards pool from excessive self-voting, vote selling, voting circles and bots.

I admit. I side with the people who use the downvotes as designed. The Hive rewards pool is relatively small. Abuse of the rewards pool destroys the ability of the platform to fund content as the designers of the blockchain had intended.