Not sure about all time, but the last 7 days is here:
http://www.northstandchat.com/thumbs_center.php?do=top
Interestingly, there is as ratio of about 10:1 for "thumbs up" vs. "thumbs down"
Most people claim they don't care about thumbs up/down. If that's the case why not just add the thumbs down button back in for those of us that like to vent by pressing a small red button?
I don't like it. This isn't Facebook or, God forbid, The Argus website. If you don't like someones opinion, tell them why, don't just 'thumbs-down' them. Could be the demise of NSC, I predict the feature will last less than three weeks.