So this has turned into windmill thread part 3.
I'll say what I said in the other two threads. Nothing is wrong with the windmill.
watch these:
http://www.youtube.com/watch?v=SNlc8Jj1F-Q
http://www.youtube.com/watch?v=EFcnF1yS4o4
Sails push the blades...period. The windmill in the trailer is wrong...period.