Passion, purpose and need - don't start a wiki without these qualities. Adam points out that a wiki + work does not automatically = productivity. He also empasized that it needs to be simple. So simple tht it won't be a barrier to its own use. It can, but it must be something for which a wiki is well suited. Everything that they might use a whiteboard for would be a good use of a wiki. 

I can't tell you how many potentially great technology tools have been abandoned because they were started by those who are excited by the technology, but do not have a stustainable topic to keep the inertia going.  This relates to the conecpt that educators MUST make sure that teaching and learning are first in any implementation of the technology tool in the classroom.

Heddy mentioned that their group invites new members to post a new page. This encourages visitors to create their own spaces and this has perhaps led to too many pages being created.

The photo above shows a simple wiki being edited....