I thought that your presentation was very well thought out and helpful. I could see using this explaniation in a class using wikispace. I might even use it as a base when I create my classroom wiki to use with my students. I also like that you had the navigational options so that students could go over the information and slides again. I liked that you included your voice in the presenatation as well, explaining the steps in the process. I also liked the different arrows you used to draw your students' attention to different aspect of the page.
One thing that I thought you could add to the presentation is maybe a screencast of adding information to the wiki or how to upload the files to the wiki. I think this will change things up a little bit and keep the students involved in the presentation. I also had some technical problems (see below).
I had trouble opening up the links and documents in the presentation. The only one I could open was the Chichago citation link. The others can up with an error message. It may be because you used a Mac and I'm using Windows. I also noticed that if the default e-mail was not set up on the computer, the link to e-mail you didn't work either. You may want to include that on the slide in case that happens to one of the students.