I remember seeing a video here at the forums where one guy did vote 1 to 10 to see how the voting system behaves. The conclusion was that it more-or-less ignores a few 1-3 point votes before starting to take them into the equation. Which is why downvoting with 4 became popular.

Note that having public votes would prevent most of it.

How does it perform against CSDb Voter Pro 1.0 ? :)

You make things bad with downright 1 but you need quite a lot of 1s so lonely vigilantes stand no bigger chance against cluster of other grades ;)

All calculation formulas are prone to generate some (positive or negative) bias in one way or another, but will be exploited only if there are people willing to do so.

On the other hand, there is no "perfect" system. Utilizing absolute (numeric) measures by people attributing arbitrary criteria generates bias, but so does the dispersion of the scale (10-point scales generate way more 8-9s for "very good" works, whereas in 5-point scales it is almost exclusively 5) because psychology, and so on, and so on.

Psychological bias can't really be avoided and it's IMHO not a system's job to compensate for it. It's easier and better to eradicate single malicious actions.

Note that this solution does nothing but implement a psychological factor into systemic compensation, as it is based on assumption that one or several votes were malicious/beneficial solely because they went against what most people said. That doesn't need to be true, and excluding them leads to self-confirmation bias, which is an equally rigged outcome.

All top prods would basically look like