My thoughts on wikis...I think they are a great tool to use when bringing many different ideas, information and resources together on one subject.  Many people can work on them while constantly making changes to the information so the information is current and correct.  It is always a good idea to have different minds working on updating information because there is more than just one perspetive or one source of research.  This creates a greater probability that the information will be accurate and up to date.  Also, they are quick and easy to use when in need of a quick summary.

The down side to wikis is they are difficult to use when having more than one person work on a page at a time.  Also, no matter how many accurate sources work on a page there are those out there that will have information that is incorrect which is not good because wikis are so quick and easy to read that some younger students may take their information straight off of one without checking the information.

I think that they could be a great tool to use within the classroom but the teacher would need to monitor the content an dkeep track of what is going on the wiki and what is missing.  This would allow the wiki to be accurate and full of beneficial content for the entire class.  I do think extra time and attention would need to be incorporated into creating and maintaining a wiki but if a classroom has excellent ideas on a subject and a teacher is excited and willing to create one with them I think they can be very beneficial. 

Teamwork all the way!!!