Add the appropriate Sabifoo bot to your Instant Messenger contact list and send them a message. This will automatically create a very simple blog for you.
Now send the following:
!gateway * http://www.communitywiki.org/odd/SandWiki
Replace SandWiki with your own wiki name!
And from now on everything you send to the Sabifoo bot will be posted to the wiki using a day page. Just send anything you want:
Hello World
More documentation: Oddmuse:Sabifoo.