KWL Wiki

I was doing research about Wikis in the classroom, and found an interesting idea of using a Wiki as a KWL chart. At the start of the unit, you can have students post what they know and what they want to know/learn. Throughout the unit, students can post what they have learned and edit and evaluate some of their initial ideas. Has anyone actually used a Wiki as a KWL chart?

Wikipedia in the Elementary Classroom?

I have to admit that I was a little skeptical of Wikipedia, and the validity of its information. But after reading Chapter 4 in the Richardson book I gained some confidence in Wikipedia through his comment that said, "there are vastly more editors that want to make it (information) right than those that want to make it wrong." My major problems with Wikipedia deal with the readability level and the (accurate) inappropriate content for an elementary student. For example, a student was researching Maya Angelou for Black History Month, and Wikipedia shared information about her being sexually abused as a child. Now, I realize this information is factual, but it is definitely inappropriate for elementary students. I think Wikipedia is a great source for information, but teachers need to use great caution in editing what the students should and shouldn't read. What are your thoughts about using Wikipedia in the elementary classroom?