Vidibus::CategoryTag 
This gem is part of Vidibus, an open source toolset for building distributed applications.
Installation
Add gem "vidibus-category_tag" to your Gemfile. Then call bundle install on your console.
TODO
Housekeeping
A task that removes deleted tag categories from tagged items would be helpful. And we need a way to remove unused tags from categories.
MapReduce
Use MapReduce to determine which tags have been used on a category. Also track the number of occurences per tag.
Copyright
© 2011-213 Andre Pankratz, Martin Jagusch. See LICENSE for details.