I ask this because I have 20 posts in one category and every time I get the same related articles. Because are posts on the same subject , many tags are commons.
Another thing when I choose body "consider with extra weight" and category (consider) I get irrelevant articles.
I tried to modified myself in the plugin but with no success. (magic.php $totalweight ).
Thanks for the plugin, and the new cache options for version 3 cache help speed the wordpress a lot.