Gossip has a very bad reputation. The word "gossip" itself (and its synonyms, like "idle talk," tittle-tattle," "hearsay," "blather," and "rumor-mongering") have negative connotations. And this bad reputation is not totally unreasonable, as gossip is sometimes very harmful. But, on some occasions, it's actually a very good and useful thing that people gossip. For instance, if someone in a community is genuinely very dangerous, it's important that the evidence of this is spread throughout the...