Why Wiki?
A: Needs feedback
B: Is kind of lame
The general idea is this: Have students create an article, read and comment on other articles, revise, teacher comments, final draft.
Sites
I found Wikispaces good because it has no adds and has a bulk user creator. It also has a really good system for making comments. You can also change the permissions on the page as well. The draw backs are is that it looks kind of bland and there are no ways to change that unless you pay. It is also a little bit of work to set up users (but this gives you a good deal of control, including setting passwords.).
The other site is I tried was Wikia. The benefits are that the design has more customization and anyone who knows it exists can then contribute to the article (it sends an email when someone does.) The disadvantages are that there are lots of advertisements and no system for making comments outside of altering the actual text. Security is also an issue because anyone can write on it (makes it easy to set up though). Navigation is strange and hard to find things you wrote.
The Assignment
Create a narrative essay. The story is a personal or made up story. Collect your stories by your country of origin. Write the essay on a wiki page, comment on other student articles, and revise work.
The wikia page. Feel free to contribute to this! Add your country by adding a page and write your narrative.
Reflection and Potential Uses
What is great about this is you can have the whole set of directions available. It is also nice because you can model what you want done in class (for instance, we commented on an essay by an old student) and have them explore on their own.
It is also really neat to see the articles and comments pop up. You'd be surprised what your students can create in a short time.
What is also neat is that students can have this for ever.
Finally, this could be an interesting way to not only do narratives, but many different types of essays, summaries, news reporting, classroom study guides, really anything. The idea is they work together to collect the parts of the whole and comment on each other's work.