Today I developed this tool to import wordpress blog rolls as XML document. You know when you export data from wordpress.com that doesn't include the blog rolls data. So if you want to keep a backup of your blog rolls, you can use this tool to import your blog rolls data..
You can even use it with your wordpress.com accounts
<img src='http://hasin.files.wordpress.com/2007/04/importer.gif' alt='importer.gif' />
Developed using PHP and Curl.
You can doewnload it and see the code in action here