Bike porn

If/when citation can be provided I'll happily declare Sheldon Brown to be a cretin.

Downhill Racing

I consider this fad to be bad for cycling, and contrary to the spirit of cycling. It is effectively just a variant form of motorcycle racing, since most of the power is provided by the machinery that carries the rider and bike to the top of the run. Bicycling should be a human-powered activity, or it is not bicycling to me.

http://www.sheldonbrown.com/gloss_da-o.html