I voted no, mostly because I did not realize there was a rating system. Then I noticed that I have something like 5 stars after my name which means that I must be more useful or cooler than JCL or ventilator or all those other guys who post useful information. So can I go back and change my vote?
Seriously, a voting system that gives me 5 stars when I may have posted 10 times with only marginally useful information is rather silly.