actually not talking would probably decrease ur chance, Player mods are meant to be nice to other players so acting like ignoring would decrease, as for problem solver, u have to report alot, thats how they notice u then they continue to watch u to see if you are player mod material
either way... Black Marks are the Strikes against ur accounts, for breaking a rule, only way to be told u have one is from the message center when a Jagex Mod sends u the message