Libre Graphics Meeting is the conference for people involved in Free graphics software and this year is taking place in Vienna, 2-5 May.
http://libregraphicsmeeting.org/2012/
I will be there and submitted a talk proposal about WLM, it was accepted and scheduled for 4 May at 17:30: http://libregraphicsmeeting.org/2012/program/
My plan is to focus on my personal experience in Romania but also talk about the international competition and the importance of Wikipedia and Free Culture.
Don't ask for the slides, they are not written yet :) The most difficult part for me will be the scarcity of statistic data about 2011.