Anyone else have experience with using graphical Wikis for
collaboration? Just started to play around with a Java app called
Kerika which has this whiteboarding + doc management approach,
although it is P2P rather than Web 2.0 (which is mostly good IMHO
because you can share really large files, even jars).

If you google for "graphical Wiki" you don't get a lot of useful
results. Thx.