I spent almost one week to move from Radio Userland to WordPress. Exporting all the posts was the hardest part of it. The most linked tutorial looked too hard for me. This is what i did.
1. I modified the Rss Import file (in my wp-admin folder) as the tutorial said. So I did with the permalink structure.
2. I didn’care about writing-up a shell script on the Mac. Forgot it.
3. Then I used the Steve Hooker’s backlogAllRss macro to make a back up of all my posts in one file rss. So I uploaded the file in the wp-admin folder and modified import-rss as the tutorial said (i.e. rename your backlogAllRss.xml file in ‘olblog.rss’ and write this in the import-rss field).
4. Be smart: the macro just works for the posts with a category. ‘Home page’ flag iisn’t enough. So if you – like me – didn’t tag all your posts you have to do it now.
5. A second problem: this way you won’t be able to export your comments.
6. Write your address /wp-admin/import-rss.php, go on: the program should import all of your old posts. All categorized, with the correct title.