Glad I didn't find this until after the fair
If you're looking for an excuse to keep your kid off an amusement park ride:
RideAccidents.com is the world's single most comprehensive, detailed, updated, accurate, and complete source of amusement ride accident reports and related news. The site includes a record of fatal amusement ride accidents in the United States since 1972, and, for the past six years, has recorded all types of accidents, including many from outside the United States. The number of injuries and fatalities recorded at this site does not reflect the total number of injuries and deaths that have occurred as a result of amusement ride accidents.
There's a special section on carnival workers and background checks.
Yah, I'm a big rollercoaster fan, but I try not to ride anything at the fair. At Six Flags, the rides have been there a while, and are checked multiple times each day. The fair rides are torn down every two weeks, moved, and then put together by someone who probably didn't finish high school.