Robben repeated diving pissed me off more than anything. He spent the whole game trying to sell the dive, finally got the ref to bite on it at a crucial moment, and it won the game for them.
In a lot of these World Cup games, it seems like the referees are not establishing limits among the players early, so they keep playing rough or trying to sell the penalty, and it ends up with a questionable call in the end.
If these refs busted out the yellow card early, it might set the tone and prevent these sorts of mishaps.