Two big events on word of mouth coming up:
In Europe, The Third International Word of Mouth Conference by Brand Science Institute and the same people who brought us the Second Life brand study. May 10-11, Amsterdam. They have a bunch of cool pre-conference downloadable goodies from MillwardBrown, Crispin, Fallon, MIT Media Lab, Microsoft Research Lab, but you'll need a validation code.
In the states, WOMMA is conducting WOMBAT, which stands for Word of Mouth Basic Training. A very cool line-up of speakers. New Orleans, April 17-18.