Category SEO Manager
From JReviews Documentation
The meta keywords and description displayed below are the same ones stored in the Joomla Category Manager. Here you can quickly view and edit them. You can also add a custom page title and override the page heading and page description for category pages.
The following tags can also be used: {category} - current category title, {category1}, {category2}, etc. which represent the titles of parent categories of the current category. {category1} is the first level, {category2} the second level and so on.