How I Use It
Within my district, I use Wikispaces to provide our all sites with a grade-level resources for teaching digital citizenship. I also assist staff in setting up wikis for specific grants and projects. Beyond the district, it would be hard to imagine co-curating a collaborative effort such as the Digital ID Project (http://digital-id.wikispaces.com/) without Wikispaces.
From its inception, Wikispaces has always had a commitment to education, with ad-free accounts available to teachers. I use the free version for work that goes beyond my district and am always impressed that, unlike so many programs with fee-based options, I am never bombarded with reminders and links to bumping up my account. Wikispaces support is amazing - for both free and Campus accounts.