Understanding patterns of wiki usage

A wonderful site for understanding patterns of wiki usage is Wikipatterns. Here is its introduction:

Looking to spur wiki adoption? Want to grow from 10 users to 100, or 1000? Applying patterns that help coordinate people's efforts and guide the growth of content, and recognizing anti-patterns that might hinder growth - can give your wiki the greatest chance of success.

Wikipatterns.com is a toolbox of patterns & anti-patterns, and a guide to the stages of wiki adoption. It's also a wiki, which means you can help build the information based on your experiences! Beyond this site, there are many other additional resources.

The site discusses many people and adoption patterns that aid or hinder active wiki usage. For example, the issue of page ownership as follows:

People who have no prior experience of wikis tend to think an author owns a page and do not dare to change the content. Rather than that they write eMails or Comments or offer their input to the author over lunch or coffee.

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How do I prevent it?

Every time influential individuals or a large or strongly interconnected group join the wiki, hold a hands-on training session, where everyone gets to edit real, valuable material authored by the trainer (who has to have solid self-confidence and not take any changes personally). Attempt to create as many problem situations as feasible during the training and help the learners create mental models for how they can solve/survive them.