This personal wiki is a place to dump my personal knowledge and ideas. I use this as a space to blog and to aggregate the information I know. It is always changing. I often revise old entries when presented with new information.
The wiki trend is quite old. The first wiki was the WikiWikiWeb. Many have iterated on this concept since. Personal wikis are derived from this wiki format but the pages of a personal wiki are created and edited by only the author of the wiki. Sometimes, but not necessarily, pages embrace the author's bias and present a personal view of the world. This contrasts with pages in a traditional wiki which seek to define a knowledge domain in more neutral terms, or at least in terms which align with the wiki's community. For more about the wiki idea and its contrast with the monolithic Wikipedia see WikipediaIsNotWiki.
The most well-known of personal wikis is Everything Shii Knows. You probably only care about this wiki if you care about imageboard history for Shii's perspective on 4chan as a 4chan moderator.
Some personal wikis I like are on my blogroll.