This contribution is similar to other meta tag contributions except is utilizing some custom code that gets most of the data from the database and uses things like Category Names, Products Name, Product Description and Manufacturer Name to create the meta tags.
The big advance of this contribution is it has the ability to CACHE the results. This will speed up your store and reduce server load. It is compatible with file caching or Chemo's New Cache Class. It is not required to install Chemo's Cache Class unless you want to cache the results in the database.