The relevant quote from Scoble:

By the way, PR people should take lessons from Denis. He not only drove a few hours to see me in Davos, but he taught me to sled, which was one of the highlights of my trip to the World Economic Forum. Of course no good deed goes unpunished because I beat him down the hill.

"taught me to sled"

Does "sled" mean something unusual here? My experience is that it is similar to falling down a hill, but with something slippery under you-- not really a skill that needs teaching, I thought.

You haven't been to Switzerland, have you? Or you are from Switzerland and all of this is child's play.