Make it so that for every 1 star given to a review, the person who posted it is deducted 25% of what he got by posting it. As much as this may like a risky idea, I doubt enough people on this site are going to 'bomb' a good review in spite of the person.
Especially if it involves controversial games like ED, Knytt Stories, or Tormishire
Disclaimer: Any sarcasm in my posts will not be mentioned as that would ruin the purpose. It is assumed that the reader is intelligent enough to tell the difference between what is sarcasm and what is not.