Although I didn't mark it down for the motion blur, I feel as though you should have tried to conform to the challenge wording a little better. Good photo.
wish the lighing was lighter, good job though. You really get the feeling of the fan being on, I know I can't stare at the center - which is where your eye is drawn - I feel motion sick!
Ahhh, at least, I see. It's a fan. It is indeeed an interesting shot, but unfotunately it is not a very well defined stop motion shot. Had to grade it down for that - sorry.
My eyes couldn't decide whether to focus on the cieling or the blades.. I can tell that these blades were in motion, which doesn't really meet the challenge. Tough subject for "Stop the motion".
This would be a lot more interesting to me if it weren't slightly off center... it either needs to be precisely in the middle or offset some more. It's a nice abstract shot, though!
Interesting how the action is more frozen near the hub of the fan and more blurred near the ends. Still it needs something more to be a compelling image.
You were obviously going for something abstract here but we were supposed to avoid motion blur. Perhaps a much faster shutter speed and tying something pretty to each blade to show the frozen motion. Hmmm, Frozen Motion, wish I would have thought of that name for my entry.
This is going to be a challenging comment, so please bear with me. A vast majority of the motion in this photo is not "stopped". The only moving parts that appear to be remotely stationary are the metal arms that hold the blades to the fixture, and the fixture itself. The inner spikes just outside the light are stationary to begin with. I like the artistic qualities of this photo but I don't think it's a good representation of the challenge topic.
I am sure it was hard trying to freeze the hub spokes while allowing the blades enough blurr to show motion. This shot does not deserve all the "ones" it will surely get because of that blurr.
This could have been a very boring, simple shot. But the shutter speed you used, making it dark and only a little blurry, really makes it fascinating. More towards the center would've been better, that's my only nitpick.