murraypicton

Puts the category and tags of the post in the meta keywords tag in the html to increase SEO compatability. If not tags are found, the full list of tags on the site are used.

Tags To Meta

Increase SEO by putting blog tags and categories into the meta keywords on each page

P. Chandra

Automatically adds a META keywords tags with keywords within the html HEAD tags. The categories are used as keywords. 
Note: Works on single posts only as they are assigned categories.

Quick META Keywords

Automatically adds a META keywords tags with keywords within the html HEAD tags. The categories are used as keywords.

Tags To Meta vs Quick META Keywords