I just added some more regexes. The last one extracts the username from the <title> tag, but causes a false positive on wordpress 2.0. I think this is a bug in Wordpress 2.0 because the "author name" in all feeds is always the site title `<dc:creator>test</dc:creator>`. I have not found a way to get the username based on a id in wordpress 2,0, but you cannot log in with an id so you need to specify the username.