Hmmm...Mr.Mo, I like this question.
Well...the Doug incident in NYC (he set his chest on fire) could've been prevented with a bit more spin off and he had never used white gas before so he didn't realise how different of a fuel it could be, answer...education.
Anyone remember when Dangerboy's whip went psycho and gave in 2nd/3rd burns on his hand? Looking at the wick design where he got it from (some site online) it is an easy adjustment to keep if from doing that, don't have the wick fabric circling out the top of the handle.
Wicks flying from faulty parts, yup. No one has ever gotten hurt and have seen it several times. Checking and tightening things on a regular basis solves that.
Now my personal favorite, when fuel drips onto clothes and then ignites. This is just a matter of lack of caution and attentiveness.
Flaming fuel spattering people...I wear some nice scars from a girl in NH who didn't spin her poi off before lighting and going for it near people. I recieved a nice flamey splash on my arm that could've been avoided by her spinning/squeazing off.
Adam, I have had a person cut in front of my four wicked poi once in NH (same idiot girl in fact). What the hell was she thinking??? I now draw a line that the audience doesn't cross and Whipping Boy is great about keeping people behind it.
Lastly, the most frightening, comes from irresponsible eaters/blowers who don't shake off excess fuel and who don't wipe the excess fuel off of their faces, or who use the wrong fuel...in other words, a complete lack of intelligent responsibility, blow backs where the performers face and sometimes body and clothes catch on fire. It's the one people have died from. Also causing things like this are changing in wind direction or loss of focus. Solution, don't do it unless you are responsible, informed and mindful of everything around you.
Okay...my knowledge base ends there. Next.
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Pele
Higher, higher burning fire...making music like a choir...
http://www.pyromorph.com