I think that this would make for a very interesting experiment -- have two up/down arrows next to each post -- one for "I Agree/Disagree" and one for "This is V

I think that this would make for a very interesting experiment -- have two up/down arrows next to each post -- one for "I Agree/Disagree" and one for "This is Valuable/Worthless". After all, the single up/down does combine several dimensions into one judgment.