Let's analyze the valence intensity of the sentence "June 10, 2009 12:18 PM jason: check out this great new idea to offset http://www.treehugger.com/files/2009/06/man-auctions-own-carbon-offsets-on-ebay.php". Assign a real number between 0 and 1, where 0 indicates extremely negative and 1 indicates extremely positive.