You should give these ratings for anything which you think would impact someone's willingness to trade with the person, but you should not use trust ratings to attack a person's opinions or otherwise talk about things which would not be relevant to reasonable prospective traders.

Creating or supporting a scammer flag is actively affirming a set of pretty clear fact-statements. If someone knowingly supports a flag containing incorrect fact-statements, then that is crystal-clear abuse, and I will seek to have such people removed from DT ASAP. People who are habitually wrong, even not knowingly, should also be removed.

As I mentioned in the flags topic, there are three very separate scopes for trust which need to be kept separate. For scammer flags, the point is to damage the person's forum existence in order to deter future scamming. This is a very serious action which should have a very high bar. Because it's so serious, I only want actual agreements considered here. In legal systems, there's additionally such a thing as tort law and statutory law, but the forum is very far from having the kind of cohesive legal system which could handle such things in a halfway-reasonable way. The only thing that approaches clear-cut scamming is violation of an agreement. If non-contractual offenses are allowed in the scammer-flag space, then we're going to get factions of forum users constantly fighting each other, which is exactly what I'm trying to stop. I'm sick and tired of big escalations and never-ending feuds over highly-subjective and/or relatively minor things.

For non-agreement issues, use a newbie-warning flag and give them a negative trust rating. These actions are in the different scopes of warning newbies or informing other users of your opinions, which have less severe consequences and therefore lower bars.

I hate having to "defend" BSV and BCH, which were created with deception in mind, are technologically bankrupt, and are run by huge assholes, but you can't say that their supporters broke a contract with you when they didn't. Give them a newbie-warning flag if you want, but not a contract-violation flag unless they actually broke a contract with you. (Note that you might have a case for breach of implied contract if you were actually tricked into buying one of these coins instead of BTC.)