If you know of someone, or are yourself a blogger on Vox, you should know already that Six Apart has announced plans for closing the service. Users have until the 30th of September to get their data our of Vox and into other blogging and/or CMS platforms if they so choose.
Mark Jaquith has a great suggestion on how to Import a Vox blog into WordPress or almost anything else. In short, he suggests that you import your Vox blog into a vanilla WordPress.com blog and then export it out as a WordPress export file. Then you actually have a bunch of choices of what to do with your blog. PS: Be sure to mark your WordPress.com blog as private before importing if you do not intend to make that your final destination.