This module was the first to integrate Moxiecode's popular TinyMCE WYSIWYG editor into a Drupal site for editing advance site content. Unfortunately, the approach is dated. While I am going to make another push to get a customized version of TinyMCE committed, sun's approach to editor agnostic WYSIWYG in the WYSIWYG API is much more likely to get an editor into core.
You should only continue using this module if you are interested in modifying the editor itself. Users interested in simply activating the TinyMCE editor distributed by Moxiecode should move (and contribute) to the WYSIWYG API.