A public wiki is any open for anyone to edit, including those used to gather public input (by governments, NGOs, etc.):
- Facilitate the use of the wiki by focusing attention of specific items/topics/draft documents for a specific amount of time.
- Provide optional content templates for new pages - like user pages for particular types of people you want to encourage to contribute, e.g. expert users in some topic
- Start with some substance to encourage substantive edits, don't expect most users to start from nothing - otherwise the most motivated extremes will start with polarizing content; includes example of good starting material.
- Obscure the fact that a very few people are creating a large amount of material at the start, so that others are not intimidated - chalk it up to anonymous trolls and beg for better content so the wiki is not taken over by trolls
- Use mediawiki - more people know it than any other, it notifies everyone of changes well enough, and has extensions that help limit wiki spam
- Get topic names right from day one, and correct errors with minimal comment
- Keep the wiki troll-friendly by forbidding administrators to avoid speculation on undeclared identity or engage in ad hominem deletes, and respecting new troll point of view
- Obey other wiki conventions and wiki best practices and evolving praxis that your users think is important, especially with regard to controversy, e.g. trolling.
A large public wiki has special problems and issues and the latter factors matter more.