Can Wikis Be Used Successfully as PR Communication Tools?

Getting started with Internet communication tools can be an overwhelming experience if you've never used them (or even heard of them before). One prime example of a much-bandied-about online PR tool is the wiki. Many of us are used to consulting Wikipedia on occasion, but most probably view the online compendium in awe as we sit in front of our computers trying to figure out how all that information came together.

Collaboration has become the buzz word in communications during the past decade - much to the chagrin of some practitioners. Especially in the advent of the "citizen journalist" and the fact that everyone and their parakeet can add to, post to, blog about, or commentate about whatever the issue of the day is, maintaining some sense of expert authority or being considered the "go to" resource about an issue is becoming harder and harder.

Many individuals are turning to wikis to find non-commercialized information - that is, information without all the advertising that sometimes seems to come with other sites.

YOUR TURN
Find an example of a wiki (NOT Wikipedia) being used, and that is open to the public. Include the URL for the wiki in your post. Explain: why or why is this wiki not useful and effective? How could it be improved? What are some of the pitfalls of maintaining "expert authority" in this specific wiki? How do the wiki's founders maintain that expert authority?