I wrote about it a while ago, just only now saw that topic was locked lol.
http://www.f1technical.net/forum/viewto ... 1&start=60
Anyway, give a man the power to do something and he'll abuse it. There are very, very few people that can actually handle "power". The rest will use it in such a way that either he will get better off of it, or just abuse it.
And certainly with the current amount(of better said, lack of) of voters this abuse, or voting out of personal interest(yes, upvoting someone so that he'll like you better is out of personal interest), just shows much, much better.
But then, when everyone can vote, everyone can abuse it in a way he will see fit and we would see that the one that is most liekd by the people on the forum would get the highest ranking of them all, even though he doesnt really add anything informative, which is the way that the rating is meant to be used.