I am using wordpress along with Google (XML) Sitemap Generator Plugin, and have got a question about sitemap priorities.By default, The plugin gives higher priority to category, tag and archive pages. Even the author of this plugin himself does so,  I don't know why. Aren't articles more important? Here is the author's sitemap, you can see that it gives only 0.1 priority to articles.http://www.arnebrachhold.de/sitemap.xml
Why sitemap gives higher priority to category and archive pages?
seo;google;wordpress;sitemap
There's no good reason for doing that, although to be honest priority is hardly used and has no effect on ranking, so I wouldn't worry about it too much.