January 12, 2008 | St. Petersburg TimesScott Long begins his column, "I haven't even made my first trade, and I may have already made the biggest investing blunder. No, not on NYSE. On IEM. The Iowa Electronic Markets is used by UNIVERSITY OF IOWA for teaching and research, but ordinary folks like you and me are welcome to invest up to $500 to buy and sell shares in presidential candidates, just as we'd buy and sell shares in companies." The St. Petersburg Times is published in Florida.