I rate based on overall quality-not whether or not I agree with your opinion. Personal experience is key. A touch of humor can't hurt either. But seriously, I am a very straightforward person and I promise to rate honestly. You won't find me playing the little 'revenge rating' game either-it's just not my thing.
Nobody trips over mountains.
It is the small pebble that causes you to stumble. Pass all the pebbles in your path and you will find you have crossed the mountain.