I consider those rules every GM should follow. I try to give everybody choices while still keeping secrets and making sure that things that need to happen, happen.

I remember reading once that a crappy GM will plan for his players to go into a dungeon, and if they don't go to it in the north he'll come up with some contrived bullshit to make them go there. A good GM will keep the dungeon a secret and when his players go south it is secretly moved to the south making them feel like they discovered it on their own.

Of course Play by post is far different and I try not to be [i]quite [/i] so sinister.