This sounds like a good idea to me. Never thought one can use OpenOffice to import MySQL database and do all sort of crazy things. I can even build PDF file of all top posts and provide it as download option for a small fee. From the article:
If you are running a blog (or any Web publishing system, for that matter) that relies on a database back end, you will sooner or later face the problem of backing up the content stored in the database. One way to go about it is to build a backup tool using OpenOffice.org Base. Since Base can pull data from a MySQL or any ODBC-compliant data source, you can create a simple database that connects to the blog’s back end and extracts content from it, which you can then export in different formats.