For guy's with a bazzillion posts like me & some others it really dont mean all that much but it does give a newb some kind of idea that the advice he is getting is from a person who is being judged by his "peers" so to say,once your here for a while you will see the value of the ranking system,what I THINK its best for is weeding out the a-holes who constantly start trouble.
You can leave feedback by clicking on the little scales on the right,enough bad feedbacks for ignorant reply's & the members chicklet will turn red & pretty much say he's a troll.
I personally dont hand out red's but ive seen guys who deserved the red they ended up with,none of which visit any more now that their chicklet says their a troll