I tried various other tagging solutions for Joomla and found this to be the best. The one gripe (its really not an issue) I did have with it was the implementation of the editor plug-in and not utilizing the metakey field. There are probably others who prefer it but I felt like I (or others) would be doing double the work and did not feel inclined to use the admin import metakey function since I expect a large number of articles from various people and wanted this to be real time.

For my situation it made sense to modify (my plan is to move it out to a plug-in) com_content save task line 151:

$id = $post['id'];
$tags = $post['metakey'];
$combined = array();
$combined[$id]=$tags;

require_once(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_tag'.DS.'models'.DS.'tag.php');
$tmodel = new TagModelTag();
$tmodel->batchUpdate($combined);

Maybe the author could have this as an option.