Choosing a wiki format

My colleague and I have decided to start a wiki to keep track of all of our ideas for an upcoming poster presentation we will be doing for a conference. pbwiki is one that we have learned about in class, but we have looked at other examples too. One professor recommended we look at wetpaint. I recently saw a wiki presentation at a conference and that professor recommened wikispaces. There are already many webpages written about wikis and comparison charts. Check back to see what we decide to do.