[Brandon Martus]

all good points.

And -- if all else fails, I can restrict it so much that it will be impossible to abuse it.

I can make it so you have to rate 45 people before you rate a person a second time.
I can make it so you can only rate 5 times a day.
etc..

And, as a last resort, I can go and undo any abuse.
If you think you are getting bad reputation for good posts, talk to the person via PM. If nothing is resolved, send me a PM and I'll look into it.