Doing a Free and Open Source presentation on Software Freedom Day could be a nightmare to some resource speakers. It is similar to eating “Bertie Bott's Every Flavor Beans” in the Harry Potter series since you would never really know the composition of the audience till you get there. Last year I had to improvised since I believed that the presentation that I prepared was too complicated for the audience to take notice off. I ended up with a 40 minute presentation with one slide that only tells about the title of my topic and my name (well, actually two if you count the next slide that contains my email account so that they could add me to their Facebook account).