A wikini site was created from the start of the meeting project and was added to along the way.
A discussion list was opened and people could subscribe to it using the Wiki homepage. At the preparatory stage of the meeting around one hundred people had registered. The organising committee used this to prepare the workshops (opinions on the suggested topics, searching for speakers, technical matters to broadcast the event on video…).
A call for this event was launched through a form (Google Docs): anyone contributing a project on citizen sciences could present their initiative freely. It was therefore referenced automatically on a map of citizen science projects. Later on this collection was edited and published in a book of nearly fifty pages, a directory of citizen sciences.
Since the topics were identified and posted on-line on the wiki, under each of them there was space for comments that allowed internet users to give their opinions (for example, on the page of the workshop on ""Discussing the quality of volunteer data "").
Two spaces were also made available to participants so they could share their resources: a library to indicate bibliographic references and a video gallery.
A survey was distributed among volunteers working on these projects references on the map and the booklet; this allowed these key actors in citizen sciences to speak.