Wiki - what could I use one for?

This class has been a whirlwind of new knowledge for me. I truly am enjoying gaining a knowledge base of a few Web 2.0 tools.

I researched several wikis to find how other teachers are using wikis in their global classrooms. I've been trying to keep in mind that investigation and asking for permission to edit doesn't always mean a long term commitment. Wikispaces contains a fountain of information for educators and a variety of other professions.

I found a second grade class wiki. It is inspiring. All the students have links to a page about them with artwork and a narrative. The different subject areas have links and a list from a to z. Whenever the class accomplishes/learns something throughout the year, they add it by the letter under the subject. For example, under the writing link, p = persuasive writing. The wiki also contains tools that can be used with homework such as story mapping. This is a great example of how we as educators can build a familiarity with technology with students and parents. The link is: https://mrsibrahim.wikispaces.com/Thinking+Maps

Some other ideas I found for uses of wikis with young children are:
book reviews or commentary on a specific book

"encyclopedia" of a topic that can be added to each year (the example I saw involved state history)

a non-field trip (students add what they saw/learned on a "trip" to a specific place that is to be learned about)

field trip log/what did we learn

Where in the World is Wanda wiki. Wanda visit places in the world. Highlights and pictures of her trip are added by those she visits.

They all sound like worthwhile learning experiences.