Interesting: Google groups adds wiki functionality?
While going through the process of adding some information for the new google group for the Barcamp Frankfurt I noticed that you could if you like use the google group not only to have discussions but also host pages and host files.
Very interesting for groups who want to share information like with the barcamp folks! Although it is again one of those cases where you have to relearn where to find stuff …
On a side note: Planned Barcamp FFM will be about the 4th Barcamp in Germany in few months, plus at least one additional podcamp planned in january in Berlin. Slowly, slowly it is coming along. ;)