Wikis

I am bringing devilled eggs to the picnic. It certainly does get more challenging when you are one of the last ones to join in! Too bad we aren't really going - what a feast!

The wiki was very easy to use. I can see using it for many reasons - most of which you already mentioned in your overview! The fact that it is more like an editable document than separate posts, like a blog, make it very friendly. It would be most suitable for smaller groups so that everyone is respectful of each other's comments.