Chris G wrote:
Apart from the ability to edit a web page and add stuff on a sequential basis is there anything special that a blog does that a wiki doesn't?
Not really.
But a wiki page is a document which is collaborated on by many people and changes over time, a blog post is a comment/diary entry/journal entry/article made by one person on a particular date which (usually) remains static from then on (except for comments made by other people). You can subscribe to a blog using an RSS or Atom feed and be updated when new posts are made. By contrast, subscribing to a wiki via a feed only makes sense if you're interested in every little change made to a living document.
So a wiki page is for collaboratively editing a document over time, a blog post is for making a timely comment.
For an alternative view, ask MJ Ray, I have no idea how his web site works :P
-- Ben Francis http://tola.me.uk