Two tags are made available with this plugin: rsx_word_count (number of words in a post), and rsx_total_word_count (number of words in all of your posts).
This tag returns the number of words in a post. Just place the
<txp:rsx_word_count /> tag in a article form template, and it should tell you the number of words in the corosponding article.
This tag returns the total number of words in all of your posts. You can place this tag anywhere on a form or page template, as it gets the value right from the database.