I like concise statements about the use and benefits of a tool, and I find that in the grind through of information (or the grind through my overload of information) that these types of blog postings are highly beneficial in triggering both a reminder of a way to utilize the tool, as well as innovate from the concept or particular implementation.
Witness Colin Mooney's blog, Extacit, and a post from earlier this year Wiki as a Knowledge Management Tool. What I like about the post is the value of the content about his wiki pilot implementation, but it is also quickly (and easily) digestible.
Mooney takes the 4 components of the KM cycle (Find, Organize, Share, Use & Re-use), and highlights how a wiki has assisted in accomplishing this.
Wikis are a great tool to have a centralized location for everyone in the community to share and collaborate on content, making that content - or Knowledge, if you will - easy to Find.
The pages of a wiki typically get constructed in an organized manner. Wikis also link easily to other pages and provide the ability to create links to pages not yet written, helping to better organize related subjects and plot a path to the future (or reminders to develop certain content). Colin Mooney's post stressed the wiki's ability to search and retrieve information as an added benefit that his users experienced.
Of course, sharing is one of the things that a wiki does best, from sharing the content to sharing the collaboration and writing.
A collaborative environment utilizing a wiki also accomplishes the use and re-use of the knowledge, if correctly implemented. Specifically, "avoiding redundant effort, avoiding repeated mistakes and taking advantage of existing knowledge and expertise within your organization" (from an answer to a question listing 3 major benefits of KM by Stan Garfield).
All great reminders of the benefits that should be attainable from the use of a wiki.