Wikis are a great way to get multiple people involved in a project.  Though I haven't thought of a way to use a Wiki with K-4 Spanish, I would LOVE to set one up for our K-8 department.  It would include meeting schedules and minutes, updates on conferences, alignment information, etc etc.  It would also eliminate our multiple emails where we are never sure if everyone was included that needed to be or if we replied to "all" or not.