Excellent! Consider those as well:
Create your own services and websites – do not try and enter mainstream social networks. You never know what the general public might say. I rather have my little piece of land off the highway. And start from scratch, because open source cannot be trusted (if it is for free it comes with a high price).

While emphasizing the importance of sharing, use offline documents and closed Intranets to keep most of your project information.

Arrange it so that participants’ messages cannot be edited, and post full details including email address without asking for permission. What Facebook can do, we can do even better.

Thanks again, Matz

One more item I’d like to add (for those cases where a consultation is tied directly to a decision making process): “Be vague about the level of influence participants can reasonably expect to have.”

On Zilino, we ask conveners to complete a questionnaire that covers the basic project parameters (objective, scope, timeline, funders etc.). This information is exposed to all participants at the beginning of the consultation in an effort to set the right expectations from the get-go. One question addresses the “promise to the public” the convener can commit to.