Stephanie Booth’s Batch Categories for Wordpress is an invaluable help, theoretically, for setting categories on lots of posts at once. However, it doesn’t work properly in Wordpress 1.5.2. I’ve updated it so that it does work properly, and you can download the new Batch Categories 0.92. Installation instructions are in comments at the top of the file.
Batch Categories for Wordpress, updated for 1.5.2
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