It's listed if you hit the "Profile" link at the top. If someone did rate you, their rating may not count yet if they haven't been here long enough or haven't posted enough.
As for making it easier to find the "rating" button, etc, I can definitely look into that if there is an option.
As for changing the point levels, I don't know if that's a good idea, especially if we make it easier to find how to vote. Simply because we have such a large, active user base that if would move people too quickly, especially if more people are using it more often.
However, if we can't make it more visible, then I would agree that lowering the levels for now might be appropriate.