1 we are a head of villains range
2 the board is wet.

I read this in one of sklansky's new books. He's talking more about playing good players and says that if you bet small enough for the villain to see the river you can't win because a strong villain will have a balanced bluffing/value betting range. and " you will fold to much when in front and call to much when behind" . Now i doubt very many micro players have a perfectly balanced bluffing/value betting range. Having said that isn't this tactic even more useful against the calling stations at micro poker. Not because you're scared of being out played on the river but because they will call over bets with draws and weak made hands. Thus we will get a lot of value from over betting our +ev hands on wet boards.