CORRECTION: Registration is open for the 32nd International Symposium on Forecasting to be held in Boston on 24 to 27 June 2012. The ISF is the world's premier gathering of forecasters, attracting the top researchers and leading practitioners accross diverse fields of forecasting. Early registration for the three day conference is $300 less than the full registration fee. The early registration savings end on May 18. To find out more or register now, click here.