Interesting thread!
http://en.wikipedia.org/wiki/Wikipedia_talk:Ambassadors#The_future_of_our_pr...
This is the main challenge in my opinion for the second semester for WEP in Brazil, multiply the number of ambassadors - there is some progress here in the pilot. To convince professors on the importance and need of this program after showing successful cases seems easier than to have enough campus ambassadors for the demand. A key step of the project when we are thinking about expanding in any place.
Tom