The gamedev folks are working on an import functionality, and it's gonna be absurdly simple. It'll be an XML format, and it'll look like the following:
This is the text of my first journal article.
This is another journal entry. It happened on the day before the other one.
So get to work exporting your blog entries. Hopefully it'll be up and working in a couple of days and you'll once again have your archive working here.