This plugin actually works better than the "first import to wordpress.com and use that export file" route. The media all look nicely formatted in the target self-hosted wordpress blog.
The problem is that out of 800+ photos, only 140 were imported. For the rest of the posts the links to the media still go to Posterous.com.
This plugin would be perfect if it just grabbed all the media.
Is there any solution to this?