Podrías haber utilizado mi
hilo para resolver dudas sobre el sistema de confianza, ya que estabas, así centralizamos todas las preguntas y respuestas en un mismo sitio, que el día de mañana alguien nuevo en el foro o que tenga dudas puede consultar. Pero bueno, ya que has abierto hilo aparte te contesto: normalmente se refiere a usar el sistema de confianza para aumentar el valor de uno mismo en él. Cito del maestro:
A "Trust Selfscratcher" is someone who received positive feedback from a user, and has included said user on his Trust list.
This isn't necessarily a bad thing, but it can be, especially if someone included almost all users who left him positive feedback.
If that user is on DT1, leaving him positive feedback can be used to become DT2, and that's undesirable when done for the wrong reasons. Moreover, the DT1-member is artificially inflating his own positive Trust score (unless another DT1 also included the same user).