[spyder]

Yea, here is a video about an injury caused by DJI Phantom 2 with carbon fiber blades (warning: some blood dripping):

https://www.youtube.com/watch?v=ji3Hii_LZOc

Sure the propeller is not the original, but it shows that quadcopters can be dangerous in the wrong hands.

[dirktheman]

That top comment: "I catch by hand all the time"...

A stiff carbon blade rotating at 35,000 RPM causing injury? Who would've guessed!