The blogging function is now available at Ibanez Guitar Wiki. This function enables all registered users to create wikia blog articles. These articles are written written by and attributed to one person. They are different than a typical wiki article in that they are not intended to be a collaboratively written pieces of content, but instead a single user's composition. Extra options include a commenting and a voting functionality for every blog article.
It is also possible to add blog articles to existing 'normal' articles, for example this news item which is actually a blog post which is added automatically on the main page. Other uses of this function may be added to the wiki in the future.
For more info on wiki blogging, check out Help:Blog article.