There were two Tysabri surveys on this board vis-à-vis 2009 worldwide sales. In the first survey, posted in Apr 2007 (#msg-19091083), there were 28 votes and the tally was: • $0 (7%) • >$0 and <$250M (14%) • $250-499M (25%) • $500-999M (25%) • $1B+ (29%) In the second survey, posted in Oct 2008 (#msg-33019068), there were 14 votes and the tally was: • <$1B (14%) • >=$1B and <$1.5B (71%) • >=$1.5B and <$2B (0%) • $2B+ (14%) As it turns out, the correct answer was the most popular selection in both surveys.