I noticed some people give flashes a zero without even looking at it.
http://david.newgrounds.com/reviews/flas h/2 He gives the author a low score because of the replies the author gives
http://david.newgrounds.com/reviews/flas h/6
First one, he insults the author's work
http://david.newgrounds.com/reviews/flas h/8
On the futurama quiz he gives him a zero and says that the SS will ban him
http://david.newgrounds.com/reviews/flas h/9
Bottom one, he has a conversation with another user (I assume)
http://david.newgrounds.com/reviews/flas h/13
Kill Kyle 1, he says the author needs plastic surgery
http://david.newgrounds.com/reviews/flas h/17
Second one, he talks about joining their forum and gave Alien Hominid a zero just to get a reply.
Look for reviews where a person gives a flash a zero just to get a reply, which I think is against the rules anyway.