As I have written in the past, wikis are collaborative tools that essentially allow any web page of a site to be easily edited without a user having any knowledge of HTML.
Blogs and wikis are two specific types of content management systems (CMS). As such, one of their key goals is to provide a venue to quickly publish and edit content for the web. While these two buzz words share other commonalties, there are also a number of very important distinctions between the two. I’ve created a visual to quickly summarize some of the differences.
I encourage you to compare the MSNBC blogs to Wikipedia to see these technologies in action. Please note that what I provide above is simply a framework to think about how blogs and wikis are used – there may be contradictions.
Any questions or thoughts are most welcome.