The search for trustworthiness metrics goes in two directions. One is reputation, the other behavior. Reputation is relatively easy to assess; unfortunately, it’s also easy to game, and can easily be confused with notoriety.
The behavioral route has the advantage of being much harder to game: to fake behavioral dependability, I would have to establish a track record of dependable behavior – which is, after all, the point. It can be faked, of course, but such an elaborate con requires a level of effort quite out of proportion to the benefit, not to mention out of character.”